diff --git a/packages/google-cloud-spanner-dbapi-driver/.coveragerc b/packages/google-cloud-spanner-dbapi-driver/.coveragerc
new file mode 100644
index 000000000000..b36fd06d4caf
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/.coveragerc
@@ -0,0 +1,12 @@
+[run]
+branch = True
+
+[report]
+show_missing = True
+omit =
+    google/cloud/spanner_driver/__init__.py
+exclude_lines =
+    # Re-enable the standard pragma
+    pragma: NO COVER
+    # Ignore debug-only repr
+    def __repr__
diff --git a/packages/google-cloud-spanner-dbapi-driver/.flake8 b/packages/google-cloud-spanner-dbapi-driver/.flake8
new file mode 100644
index 000000000000..90316de21489
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/.flake8
@@ -0,0 +1,34 @@
+# -*- coding: utf-8 -*-
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+[flake8]
+# TODO(https://github.com/googleapis/gapic-generator-python/issues/2333):
+# Resolve flake8 lint issues
+ignore = E203, E231, E266, E501, W503
+exclude =
+  # TODO(https://github.com/googleapis/gapic-generator-python/issues/2333):
+  # Ensure that generated code passes flake8 lint
+  **/gapic/**
+  **/services/**
+  **/types/**
+  # Exclude Protobuf gencode
+  *_pb2.py
+
+  # Standard linting exemptions.
+  **/.nox/**
+  __pycache__,
+  .git,
+  *.pyc,
+  conf.py
diff --git a/packages/google-cloud-spanner-dbapi-driver/.repo-metadata.json b/packages/google-cloud-spanner-dbapi-driver/.repo-metadata.json
new file mode 100644
index 000000000000..6008b776651b
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/.repo-metadata.json
@@ -0,0 +1,16 @@
+{
+  "api_description": "Google Cloud Spanner DBAPI 2.0 Driver",
+  "api_id": "spanner.googleapis.com",
+  "api_shortname": "spanner",
+  "client_documentation": "https://cloud.google.com/python/docs/reference/spanner-dbapi-driver/latest",
+  "default_version": "v1",
+  "distribution_name": "google-cloud-spanner-dbapi-driver",
+  "issue_tracker": "https://github.com/googleapis/google-cloud-python/issues",
+  "language": "python",
+  "library_type": "MANUAL",
+  "name": "spanner-dbapi-driver",
+  "name_pretty": "Spanner DBAPI Driver",
+  "product_documentation": "https://cloud.google.com/spanner/",
+  "release_level": "preview",
+  "repo": "googleapis/google-cloud-python"
+}
diff --git a/packages/google-cloud-spanner-dbapi-driver/LICENSE b/packages/google-cloud-spanner-dbapi-driver/LICENSE
new file mode 100644
index 000000000000..f4f87bd4ed6d
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/LICENSE
@@ -0,0 +1,203 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
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+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
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+
+   7. Disclaimer of Warranty. Unless required by applicable law or
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+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+      risks associated with Your exercise of permissions under this License.
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
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+   9. Accepting Warranty or Additional Liability. While redistributing
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+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
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+      file or class name and description of purpose be included on the
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+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+   
\ No newline at end of file
diff --git a/packages/google-cloud-spanner-dbapi-driver/MANIFEST.in b/packages/google-cloud-spanner-dbapi-driver/MANIFEST.in
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/packages/google-cloud-spanner-dbapi-driver/README.rst b/packages/google-cloud-spanner-dbapi-driver/README.rst
new file mode 100644
index 000000000000..29d7be7da11e
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/README.rst
@@ -0,0 +1,11 @@
+Python DBAPI 2.0 Compliant Driver for Spanner
+=============================================
+
+|stable| |pypi| |versions|
+
+.. |stable| image:: https://img.shields.io/badge/support-stable-gold.svg
+   :target: https://github.com/googleapis/google-cloud-python/blob/main/README.rst#stability-levels
+.. |pypi| image:: https://img.shields.io/pypi/v/google-cloud-spanner-dbapi-driver.svg
+   :target: https://pypi.org/project/google-cloud-spanner-dbapi-driver/
+.. |versions| image:: https://img.shields.io/pypi/pyversions/google-cloud-spanner-dbapi-driver.svg
+   :target: https://pypi.org/project/google-cloud-spanner-dbapi-driver/
diff --git a/packages/google-cloud-spanner-dbapi-driver/docs/README.rst b/packages/google-cloud-spanner-dbapi-driver/docs/README.rst
new file mode 100644
index 000000000000..29d7be7da11e
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/docs/README.rst
@@ -0,0 +1,11 @@
+Python DBAPI 2.0 Compliant Driver for Spanner
+=============================================
+
+|stable| |pypi| |versions|
+
+.. |stable| image:: https://img.shields.io/badge/support-stable-gold.svg
+   :target: https://github.com/googleapis/google-cloud-python/blob/main/README.rst#stability-levels
+.. |pypi| image:: https://img.shields.io/pypi/v/google-cloud-spanner-dbapi-driver.svg
+   :target: https://pypi.org/project/google-cloud-spanner-dbapi-driver/
+.. |versions| image:: https://img.shields.io/pypi/pyversions/google-cloud-spanner-dbapi-driver.svg
+   :target: https://pypi.org/project/google-cloud-spanner-dbapi-driver/
diff --git a/packages/google-cloud-spanner-dbapi-driver/docs/_static/custom.css b/packages/google-cloud-spanner-dbapi-driver/docs/_static/custom.css
new file mode 100644
index 000000000000..b0a295464b23
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/docs/_static/custom.css
@@ -0,0 +1,20 @@
+div#python2-eol {
+	border-color: red;
+	border-width: medium;
+}
+
+/* Ensure minimum width for 'Parameters' / 'Returns' column */
+dl.field-list > dt {
+    min-width: 100px
+}
+
+/* Insert space between methods for readability */
+dl.method {
+	padding-top: 10px;
+	padding-bottom: 10px
+}
+
+/* Insert empty space between classes */
+dl.class {
+	padding-bottom: 50px
+}
diff --git a/packages/google-cloud-spanner-dbapi-driver/docs/_templates/layout.html b/packages/google-cloud-spanner-dbapi-driver/docs/_templates/layout.html
new file mode 100644
index 000000000000..95e9c77fcfe1
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/docs/_templates/layout.html
@@ -0,0 +1,50 @@
+
+{% extends "!layout.html" %}
+{%- block content %}
+{%- if theme_fixed_sidebar|lower == 'true' %}
+  <div class="document">
+    {{ sidebar() }}
+    {%- block document %}
+      <div class="documentwrapper">
+      {%- if render_sidebar %}
+        <div class="bodywrapper">
+      {%- endif %}
+
+          {%- block relbar_top %}
+            {%- if theme_show_relbar_top|tobool %}
+              <div class="related top">
+                &nbsp;
+                {{- rellink_markup () }}
+              </div>
+            {%- endif %}
+          {% endblock %}
+
+          <div class="body" role="main">
+          	<div class="admonition" id="python2-eol">
+          	 As of January 1, 2020 this library no longer supports Python 2 on the latest released version.
+          	 Library versions released prior to that date will continue to be available. For more information please
+          	 visit <a href="https://cloud.google.com/python/docs/python2-sunset/">Python 2 support on Google Cloud</a>.
+          	</div>
+            {% block body %} {% endblock %}
+          </div>
+
+          {%- block relbar_bottom %}
+            {%- if theme_show_relbar_bottom|tobool %}
+              <div class="related bottom">
+                &nbsp;
+                {{- rellink_markup () }}
+              </div>
+            {%- endif %}
+          {% endblock %}
+
+      {%- if render_sidebar %}
+        </div>
+      {%- endif %}
+      </div>
+    {%- endblock %}
+    <div class="clearer"></div>
+  </div>
+{%- else %}
+{{ super() }}
+{%- endif %}
+{%- endblock %}
diff --git a/packages/google-cloud-spanner-dbapi-driver/docs/conf.py b/packages/google-cloud-spanner-dbapi-driver/docs/conf.py
new file mode 100644
index 000000000000..a0a978d424e6
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/docs/conf.py
@@ -0,0 +1,417 @@
+# -*- coding: utf-8 -*-
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+##
+# google-cloud-spanner-dbapi documentation build configuration file
+#
+# This file is execfile()d with the current directory set to its
+# containing dir.
+#
+# Note that not all possible configuration values are present in this
+# autogenerated file.
+#
+# All configuration values have a default; values that are commented out
+# serve to show the default.
+
+import logging
+import os
+import shlex
+import sys
+from typing import Any
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+sys.path.insert(0, os.path.abspath(".."))
+
+# For plugins that can not read conf.py.
+# See also: https://github.com/docascode/sphinx-docfx-yaml/issues/85
+sys.path.insert(0, os.path.abspath("."))
+
+__version__ = ""
+
+# -- General configuration ------------------------------------------------
+
+# If your documentation needs a minimal Sphinx version, state it here.
+needs_sphinx = "4.5.0"
+
+# Add any Sphinx extension module names here, as strings. They can be
+# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
+# ones.
+extensions = [
+    "sphinx.ext.autodoc",
+    "sphinx.ext.autosummary",
+    "sphinx.ext.intersphinx",
+    "sphinx.ext.coverage",
+    "sphinx.ext.doctest",
+    "sphinx.ext.napoleon",
+    "sphinx.ext.todo",
+    "sphinx.ext.viewcode",
+    "recommonmark",
+]
+
+# autodoc/autosummary flags
+autoclass_content = "both"
+autodoc_default_options = {"members": True}
+autosummary_generate = True
+
+
+# Add any paths that contain templates here, relative to this directory.
+templates_path = ["_templates"]
+
+# The suffix(es) of source filenames.
+# You can specify multiple suffix as a list of string:
+# source_suffix = ['.rst', '.md']
+source_suffix = [".rst", ".md"]
+
+# The encoding of source files.
+# source_encoding = 'utf-8-sig'
+
+# The root toctree document.
+root_doc = "index"
+
+# General information about the project.
+project = "google-cloud-spanner-dbapi"
+copyright = "2025, Google, LLC"
+author = "Google APIs"
+
+# The version info for the project you're documenting, acts as replacement for
+# |version| and |release|, also used in various other places throughout the
+# built documents.
+#
+# The full version, including alpha/beta/rc tags.
+release = __version__
+# The short X.Y version.
+version = ".".join(release.split(".")[0:2])
+
+# The language for content autogenerated by Sphinx. Refer to documentation
+# for a list of supported languages.
+#
+# This is also used if you do content translation via gettext catalogs.
+# Usually you set "language" from the command line for these cases.
+language = None
+
+# There are two options for replacing |today|: either, you set today to some
+# non-false value, then it is used:
+# today = ''
+# Else, today_fmt is used as the format for a strftime call.
+# today_fmt = '%B %d, %Y'
+
+# List of patterns, relative to source directory, that match files and
+# directories to ignore when looking for source files.
+exclude_patterns = [
+    "_build",
+    "**/.nox/**/*",
+    "samples/AUTHORING_GUIDE.md",
+    "samples/CONTRIBUTING.md",
+    "samples/snippets/README.rst",
+]
+
+# The reST default role (used for this markup: `text`) to use for all
+# documents.
+# default_role = None
+
+# If true, '()' will be appended to :func: etc. cross-reference text.
+# add_function_parentheses = True
+
+# If true, the current module name will be prepended to all description
+# unit titles (such as .. function::).
+# add_module_names = True
+
+# If true, sectionauthor and moduleauthor directives will be shown in the
+# output. They are ignored by default.
+# show_authors = False
+
+# The name of the Pygments (syntax highlighting) style to use.
+pygments_style = "sphinx"
+
+# A list of ignored prefixes for module index sorting.
+# modindex_common_prefix = []
+
+# If true, keep warnings as "system message" paragraphs in the built documents.
+# keep_warnings = False
+
+# If true, `todo` and `todoList` produce output, else they produce nothing.
+todo_include_todos = True
+
+
+# -- Options for HTML output ----------------------------------------------
+
+# The theme to use for HTML and HTML Help pages.  See the documentation for
+# a list of builtin themes.
+html_theme = "alabaster"
+
+# Theme options are theme-specific and customize the look and feel of a theme
+# further.  For a list of options available for each theme, see the
+# documentation.
+html_theme_options = {
+    "description": "Python DBAPI 2.0 Compliant Driver for Spanner",
+    "github_user": "googleapis",
+    "github_repo": "google-cloud-python",
+    "github_banner": True,
+    "font_family": "'Roboto', Georgia, sans",
+    "head_font_family": "'Roboto', Georgia, serif",
+    "code_font_family": "'Roboto Mono', 'Consolas', monospace",
+}
+
+# Add any paths that contain custom themes here, relative to this directory.
+# html_theme_path = []
+
+# The name for this set of Sphinx documents.  If None, it defaults to
+# "<project> v<release> documentation".
+# html_title = None
+
+# A shorter title for the navigation bar.  Default is the same as html_title.
+# html_short_title = None
+
+# The name of an image file (relative to this directory) to place at the top
+# of the sidebar.
+# html_logo = None
+
+# The name of an image file (within the static path) to use as favicon of the
+# docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
+# pixels large.
+# html_favicon = None
+
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+html_static_path = ["_static"]
+
+# Add any extra paths that contain custom files (such as robots.txt or
+# .htaccess) here, relative to this directory. These files are copied
+# directly to the root of the documentation.
+# html_extra_path = []
+
+# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
+# using the given strftime format.
+# html_last_updated_fmt = '%b %d, %Y'
+
+# If true, SmartyPants will be used to convert quotes and dashes to
+# typographically correct entities.
+# html_use_smartypants = True
+
+# Custom sidebar templates, maps document names to template names.
+# html_sidebars = {}
+
+# Additional templates that should be rendered to pages, maps page names to
+# template names.
+# html_additional_pages = {}
+
+# If false, no module index is generated.
+# html_domain_indices = True
+
+# If false, no index is generated.
+# html_use_index = True
+
+# If true, the index is split into individual pages for each letter.
+# html_split_index = False
+
+# If true, links to the reST sources are added to the pages.
+# html_show_sourcelink = True
+
+# If true, "Created using Sphinx" is shown in the HTML footer. Default is True.
+# html_show_sphinx = True
+
+# If true, "(C) Copyright ..." is shown in the HTML footer. Default is True.
+# html_show_copyright = True
+
+# If true, an OpenSearch description file will be output, and all pages will
+# contain a <link> tag referring to it.  The value of this option must be the
+# base URL from which the finished HTML is served.
+# html_use_opensearch = ''
+
+# This is the file name suffix for HTML files (e.g. ".xhtml").
+# html_file_suffix = None
+
+# Language to be used for generating the HTML full-text search index.
+# Sphinx supports the following languages:
+#   'da', 'de', 'en', 'es', 'fi', 'fr', 'hu', 'it', 'ja'
+#   'nl', 'no', 'pt', 'ro', 'ru', 'sv', 'tr'
+# html_search_language = 'en'
+
+# A dictionary with options for the search language support, empty by default.
+# Now only 'ja' uses this config value
+# html_search_options = {'type': 'default'}
+
+# The name of a javascript file (relative to the configuration directory) that
+# implements a search results scorer. If empty, the default will be used.
+# html_search_scorer = 'scorer.js'
+
+# Output file base name for HTML help builder.
+htmlhelp_basename = "google-cloud-spanner-dbapi-doc"
+
+# -- Options for warnings ------------------------------------------------------
+
+
+suppress_warnings = [
+    # Temporarily suppress this to avoid "more than one target found for
+    # cross-reference" warning, which are intractable for us to avoid while in
+    # a mono-repo.
+    # See https://github.com/sphinx-doc/sphinx/blob
+    # /2a65ffeef5c107c19084fabdd706cdff3f52d93c/sphinx/domains/python.py#L843
+    "ref.python"
+]
+
+# -- Options for LaTeX output ---------------------------------------------
+
+latex_elements = {
+    # The paper size ('letterpaper' or 'a4paper').
+    # 'papersize': 'letterpaper',
+    # The font size ('10pt', '11pt' or '12pt').
+    # 'pointsize': '10pt',
+    # Additional stuff for the LaTeX preamble.
+    # 'preamble': '',
+    # Latex figure (float) alignment
+    # 'figure_align': 'htbp',
+}
+
+# Grouping the document tree into LaTeX files. List of tuples
+# (source start file, target name, title,
+#  author, documentclass [howto, manual, or own class]).
+latex_documents = [
+    (
+        root_doc,
+        "google-cloud-spanner-dbapi.tex",
+        "google-cloud-spanner-dbapi Documentation",
+        author,
+        "manual",
+    )
+]
+
+# The name of an image file (relative to this directory) to place at the top of
+# the title page.
+# latex_logo = None
+
+# For "manual" documents, if this is true, then toplevel headings are parts,
+# not chapters.
+# latex_use_parts = False
+
+# If true, show page references after internal links.
+# latex_show_pagerefs = False
+
+# If true, show URL addresses after external links.
+# latex_show_urls = False
+
+# Documents to append as an appendix to all manuals.
+# latex_appendices = []
+
+# If false, no module index is generated.
+# latex_domain_indices = True
+
+
+# -- Options for manual page output ---------------------------------------
+
+# One entry per manual page. List of tuples
+# (source start file, name, description, authors, manual section).
+man_pages = [
+    (
+        root_doc,
+        "google-cloud-spanner-dbapi",
+        "google-cloud-spanner-dbapi Documentation",
+        [author],
+        1,
+    )
+]
+
+# If true, show URL addresses after external links.
+# man_show_urls = False
+
+
+# -- Options for Texinfo output -------------------------------------------
+
+# Grouping the document tree into Texinfo files. List of tuples
+# (source start file, target name, title, author,
+#  dir menu entry, description, category)
+texinfo_documents = [
+    (
+        root_doc,
+        "google-cloud-spanner-dbapi",
+        "google-cloud-spanner-dbapi Documentation",
+        author,
+        "google-cloud-spanner-dbapi",
+        "google-cloud-spanner-dbapi Library",
+        "APIs",
+    )
+]
+
+# Documents to append as an appendix to all manuals.
+# texinfo_appendices = []
+
+# If false, no module index is generated.
+# texinfo_domain_indices = True
+
+# How to display URL addresses: 'footnote', 'no', or 'inline'.
+# texinfo_show_urls = 'footnote'
+
+# If true, do not generate a @detailmenu in the "Top" node's menu.
+# texinfo_no_detailmenu = False
+
+
+# Example configuration for intersphinx: refer to the Python standard library.
+intersphinx_mapping = {
+    "python": ("https://python.readthedocs.org/en/latest/", None),
+    "google-auth": ("https://googleapis.dev/python/google-auth/latest/", None),
+    "google.api_core": (
+        "https://googleapis.dev/python/google-api-core/latest/",
+        None,
+    ),
+    "grpc": ("https://grpc.github.io/grpc/python/", None),
+    "proto-plus": ("https://proto-plus-python.readthedocs.io/en/latest/", None),
+    "protobuf": ("https://googleapis.dev/python/protobuf/latest/", None),
+}
+
+
+# Napoleon settings
+napoleon_google_docstring = True
+napoleon_numpy_docstring = True
+napoleon_include_private_with_doc = False
+napoleon_include_special_with_doc = True
+napoleon_use_admonition_for_examples = False
+napoleon_use_admonition_for_notes = False
+napoleon_use_admonition_for_references = False
+napoleon_use_ivar = False
+napoleon_use_param = True
+napoleon_use_rtype = True
+
+
+# Setup for sphinx behaviors such as warning filters.
+class UnexpectedUnindentFilter(logging.Filter):
+    """Filter out warnings about unexpected unindentation following bullet lists."""
+
+    def filter(self, record: logging.LogRecord) -> bool:
+        """Filter the log record.
+
+        Args:
+            record (logging.LogRecord): The log record.
+
+        Returns:
+            bool: False to suppress the warning, True to allow it.
+        """
+        msg = record.getMessage()
+        if "Bullet list ends without a blank line" in msg:
+            return False
+        return True
+
+
+def setup(app: Any) -> None:
+    """Setup the Sphinx application.
+
+    Args:
+        app (Any): The Sphinx application.
+    """
+    # Sphinx's logger is hierarchical. Adding a filter to the
+    # root 'sphinx' logger will catch warnings from all sub-loggers.
+    logger = logging.getLogger("sphinx")
+    logger.addFilter(UnexpectedUnindentFilter())
diff --git a/packages/google-cloud-spanner-dbapi-driver/docs/index.rst b/packages/google-cloud-spanner-dbapi-driver/docs/index.rst
new file mode 100644
index 000000000000..98ebacf8044d
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/docs/index.rst
@@ -0,0 +1,19 @@
+.. include:: README.rst
+
+
+API Reference
+-------------
+.. toctree::
+    :maxdepth: 2
+
+
+Changelog
+---------
+
+For a list of all ``google-cloud-spanner-dbapi`` releases:
+
+.. toctree::
+    :maxdepth: 2
+
+.. toctree::
+  :hidden:
diff --git a/packages/google-cloud-spanner-dbapi-driver/google/cloud/spanner_driver/__init__.py b/packages/google-cloud-spanner-dbapi-driver/google/cloud/spanner_driver/__init__.py
new file mode 100644
index 000000000000..b75f2a4d398f
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/google/cloud/spanner_driver/__init__.py
@@ -0,0 +1,30 @@
+#  Copyright 2026 Google LLC
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+"""Spanner Python Driver."""
+
+import logging
+
+from . import version as package_version
+from .dbapi import apilevel, paramstyle, threadsafety
+
+__version__ = package_version.__version__
+
+logger = logging.getLogger(__name__)
+logger.addHandler(logging.NullHandler())
+
+__all__: list[str] = [
+    "apilevel",
+    "paramstyle",
+    "threadsafety",
+]
diff --git a/packages/google-cloud-spanner-dbapi-driver/google/cloud/spanner_driver/dbapi.py b/packages/google-cloud-spanner-dbapi-driver/google/cloud/spanner_driver/dbapi.py
new file mode 100644
index 000000000000..8e9dea6232f3
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/google/cloud/spanner_driver/dbapi.py
@@ -0,0 +1,43 @@
+#  Copyright 2026 Google LLC
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+"""DBAPI 2.0 Global Variables."""
+
+# Globals: apilevel
+# String constant stating the supported DB API level.
+# https://peps.python.org/pep-0249/#apilevel
+# Currently only the strings “1.0” and “2.0” are allowed.
+# If not given, a DB-API 1.0 level interface should be assumed.
+apilevel: str = "2.0"
+
+# Globals: threadsafety
+# https://peps.python.org/pep-0249/#threadsafety
+# Integer constant stating the level of thread safety the interface supports.
+# Possible values are:
+# 0 - Threads may not share the module.
+# 1 - Threads may share the module, but not connections.
+# 2 - Threads may share the module and connections.
+# 3 - Threads may share the module, connections and cursors.
+threadsafety: int = 1
+
+# Globals: paramstyle
+# https://peps.python.org/pep-0249/#paramstyle
+# String constant stating the type of parameter marker formatting expected
+# by the interface.
+# Possible values are
+# qmark - Question mark style, e.g. ...WHERE name=?
+# numeric - Numeric, positional style, e.g. ...WHERE name=:1
+# named - Named style, e.g. ...WHERE name=:name
+# format - ANSI C printf format codes, e.g. ...WHERE name=%s
+# pyformat - Python extended format codes, e.g. ...WHERE name=%(name)s
+paramstyle: str = "pyformat"
diff --git a/packages/google-cloud-spanner-dbapi-driver/google/cloud/spanner_driver/version.py b/packages/google-cloud-spanner-dbapi-driver/google/cloud/spanner_driver/version.py
new file mode 100644
index 000000000000..e2d420ede8f5
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/google/cloud/spanner_driver/version.py
@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+__version__ = "0.0.1"  # {x-release-please-version}
diff --git a/packages/google-cloud-spanner-dbapi-driver/mypy.ini b/packages/google-cloud-spanner-dbapi-driver/mypy.ini
new file mode 100644
index 000000000000..81b11c94badc
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/mypy.ini
@@ -0,0 +1,15 @@
+[mypy]
+python_version = 3.11
+namespace_packages = True
+ignore_missing_imports = False
+
+# TODO(https://github.com/googleapis/gapic-generator-python/issues/2563):
+# Dependencies that historically lacks py.typed markers
+[mypy-google.iam.*]
+ignore_missing_imports = True
+
+# Helps mypy navigate the 'google' namespace more reliably in 3.10+
+explicit_package_bases = True
+
+# Performance: reuse results from previous runs to speed up 'nox'
+incremental = True
diff --git a/packages/google-cloud-spanner-dbapi-driver/noxfile.py b/packages/google-cloud-spanner-dbapi-driver/noxfile.py
new file mode 100644
index 000000000000..dd7e1d3323f8
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/noxfile.py
@@ -0,0 +1,590 @@
+# -*- coding: utf-8 -*-
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+import glob
+import os
+import pathlib
+import re
+import shutil
+import warnings
+from typing import Dict, List
+
+import nox
+
+RUFF_VERSION = "ruff==0.14.14"
+
+LINT_PATHS = ["google", "tests", "noxfile.py", "setup.py"]
+
+# Add samples to the list of directories to format if the directory exists.
+if os.path.isdir("samples"):
+    LINT_PATHS.append("samples")
+
+ALL_PYTHON = [
+    "3.10",
+    "3.11",
+    "3.12",
+    "3.13",
+    "3.14",
+]
+
+DEFAULT_PYTHON_VERSION = "3.11"
+
+# TODO(https://github.com/googleapis/gapic-generator-python/issues/2450):
+# Switch this to Python 3.15 alpha1
+# https://peps.python.org/pep-0790/
+PREVIEW_PYTHON_VERSION = "3.14"
+
+CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
+
+LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
+PACKAGE_NAME = "google-cloud-spanner-dbapi-driver"
+
+UNIT_TEST_STANDARD_DEPENDENCIES = [
+    "spannerlib-python",
+    "mock",
+    "asyncmock",
+    "pytest",
+    "pytest-cov",
+    "pytest-asyncio",
+]
+UNIT_TEST_EXTERNAL_DEPENDENCIES: List[str] = []
+UNIT_TEST_LOCAL_DEPENDENCIES: List[str] = []
+UNIT_TEST_DEPENDENCIES: List[str] = []
+UNIT_TEST_EXTRAS: List[str] = []
+UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
+
+SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ALL_PYTHON
+SYSTEM_TEST_STANDARD_DEPENDENCIES = [
+    "spannerlib-python",
+    "mock",
+    "pytest",
+    "google-cloud-testutils",
+]
+SYSTEM_TEST_EXTERNAL_DEPENDENCIES: List[str] = []
+SYSTEM_TEST_LOCAL_DEPENDENCIES: List[str] = []
+SYSTEM_TEST_DEPENDENCIES: List[str] = []
+SYSTEM_TEST_EXTRAS: List[str] = []
+SYSTEM_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
+
+VERBOSE = False
+MODE = "--verbose" if VERBOSE else "--quiet"
+
+nox.options.sessions = [
+    "unit",
+    "system",
+    "cover",
+    "lint",
+    "lint_setup_py",
+    "docs",
+]
+
+# Error if a python version is missing
+nox.options.error_on_missing_interpreters = True
+
+
+@nox.session(python=ALL_PYTHON)
+def mypy(session):
+    """Run the type checker."""
+    session.install(
+        # TODO(https://github.com/googleapis/gapic-generator-python/issues/2410): Use the latest version of mypy
+        "mypy<1.16.0",
+        "types-requests",
+        "types-protobuf",
+    )
+    session.install(".")
+    session.run(
+        "mypy",
+        "-p",
+        "google",
+    )
+
+
+@nox.session
+def update_lower_bounds(session):
+    """Update lower bounds in constraints.txt to match setup.py"""
+    session.install("google-cloud-testutils")
+    session.install(".")
+
+    session.run(
+        "lower-bound-checker",
+        "update",
+        "--package-name",
+        PACKAGE_NAME,
+        "--constraints-file",
+        str(LOWER_BOUND_CONSTRAINTS_FILE),
+    )
+
+
+@nox.session
+def check_lower_bounds(session):
+    """Check lower bounds in setup.py are reflected in constraints file"""
+    session.install("google-cloud-testutils")
+    session.install(".")
+
+    session.run(
+        "lower-bound-checker",
+        "check",
+        "--package-name",
+        PACKAGE_NAME,
+        "--constraints-file",
+        str(LOWER_BOUND_CONSTRAINTS_FILE),
+    )
+
+
+@nox.session(python=DEFAULT_PYTHON_VERSION)
+def lint(session):
+    """Run linters.
+
+    Returns a failure if the linters find linting errors or sufficiently
+    serious code quality issues.
+    """
+    session.install("flake8", RUFF_VERSION)
+
+    # 2. Check formatting
+    session.run(
+        "ruff",
+        "format",
+        "--check",
+        f"--target-version=py{ALL_PYTHON[0].replace('.', '')}",
+        "--line-length=88",
+        *LINT_PATHS,
+    )
+
+    session.run("flake8", "google", "tests")
+
+
+@nox.session(python=DEFAULT_PYTHON_VERSION)
+def format(session):
+    """
+    Run ruff to sort imports and format code.
+    """
+    # 1. Install ruff (skipped automatically if you run with --no-venv)
+    session.install(RUFF_VERSION)
+
+    # 2. Run Ruff to fix imports
+    # check --select I: Enables strict import sorting
+    # --fix: Applies the changes automatically
+    session.run(
+        "ruff",
+        "check",
+        "--select",
+        "I",
+        "--fix",
+        f"--target-version=py{ALL_PYTHON[0].replace('.', '')}",
+        "--line-length=88",  # Standard Black line length
+        *LINT_PATHS,
+    )
+
+    # 3. Run Ruff to format code
+    session.run(
+        "ruff",
+        "format",
+        f"--target-version=py{ALL_PYTHON[0].replace('.', '')}",
+        "--line-length=88",  # Standard Black line length
+        *LINT_PATHS,
+    )
+
+
+@nox.session(python=DEFAULT_PYTHON_VERSION)
+def lint_setup_py(session):
+    """Verify that setup.py is valid (including RST check)."""
+    session.install("setuptools", "docutils", "pygments")
+    session.run("python", "setup.py", "check", "--restructuredtext", "--strict")
+
+
+def install_unittest_dependencies(session, *constraints):
+    standard_deps = UNIT_TEST_STANDARD_DEPENDENCIES + UNIT_TEST_DEPENDENCIES
+    session.install(*standard_deps, *constraints)
+
+    if UNIT_TEST_EXTERNAL_DEPENDENCIES:
+        warnings.warn(
+            "'unit_test_external_dependencies' is deprecated. Instead, please "
+            "use 'unit_test_dependencies' or 'unit_test_local_dependencies'.",
+            DeprecationWarning,
+        )
+        session.install(*UNIT_TEST_EXTERNAL_DEPENDENCIES, *constraints)
+
+    if UNIT_TEST_LOCAL_DEPENDENCIES:
+        session.install(*UNIT_TEST_LOCAL_DEPENDENCIES, *constraints)
+
+    if UNIT_TEST_EXTRAS_BY_PYTHON:
+        extras = UNIT_TEST_EXTRAS_BY_PYTHON.get(session.python, [])
+    elif UNIT_TEST_EXTRAS:
+        extras = UNIT_TEST_EXTRAS
+    else:
+        extras = []
+
+    if extras:
+        session.install("-e", f".[{','.join(extras)}]", *constraints)
+    else:
+        session.install("-e", ".", *constraints)
+
+
+@nox.session(python=ALL_PYTHON)
+def unit(session):
+    """Run the unit test suite."""
+
+    constraints_path = str(
+        CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
+    )
+    install_unittest_dependencies(session, "-c", constraints_path)
+
+    # Run py.test against the unit tests.
+    session.run(
+        "py.test",
+        MODE,
+        f"--junitxml=unit_{session.python}_sponge_log.xml",
+        "--cov=google",
+        "--cov=tests/unit",
+        "--cov-append",
+        "--cov-config=.coveragerc",
+        "--cov-report=",
+        "--cov-fail-under=0",
+        os.path.join("tests", "unit"),
+        *session.posargs,
+        env={},
+    )
+
+
+def install_systemtest_dependencies(session, *constraints):
+    session.install(*SYSTEM_TEST_STANDARD_DEPENDENCIES, *constraints)
+
+    if SYSTEM_TEST_EXTERNAL_DEPENDENCIES:
+        session.install(*SYSTEM_TEST_EXTERNAL_DEPENDENCIES, *constraints)
+
+    if SYSTEM_TEST_LOCAL_DEPENDENCIES:
+        session.install("-e", *SYSTEM_TEST_LOCAL_DEPENDENCIES, *constraints)
+
+    if SYSTEM_TEST_DEPENDENCIES:
+        session.install("-e", *SYSTEM_TEST_DEPENDENCIES, *constraints)
+
+    if SYSTEM_TEST_EXTRAS_BY_PYTHON:
+        extras = SYSTEM_TEST_EXTRAS_BY_PYTHON.get(session.python, [])
+    elif SYSTEM_TEST_EXTRAS:
+        extras = SYSTEM_TEST_EXTRAS
+    else:
+        extras = []
+
+    if extras:
+        session.install("-e", f".[{','.join(extras)}]", *constraints)
+    else:
+        session.install("-e", ".", *constraints)
+
+
+@nox.session(python=SYSTEM_TEST_PYTHON_VERSIONS)
+def system(session):
+    """Run the system test suite."""
+    constraints_path = str(
+        CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
+    )
+    system_test_path = os.path.join("tests", "system.py")
+    system_test_folder_path = os.path.join("tests", "system")
+
+    # Check the value of `RUN_SYSTEM_TESTS` env var. It defaults to true.
+    if os.environ.get("RUN_SYSTEM_TESTS", "true") == "false":
+        session.skip("RUN_SYSTEM_TESTS is set to false, skipping")
+
+    system_test_exists = os.path.exists(system_test_path)
+    system_test_folder_exists = os.path.exists(system_test_folder_path)
+    # Sanity check: only run tests if found.
+    if not system_test_exists and not system_test_folder_exists:
+        session.skip("System tests were not found")
+
+    install_systemtest_dependencies(session, "-c", constraints_path)
+
+    # Run py.test against the system tests.
+    if system_test_exists:
+        session.run(
+            "py.test",
+            MODE,
+            f"--junitxml=system_{session.python}_sponge_log.xml",
+            system_test_path,
+            *session.posargs,
+        )
+    if system_test_folder_exists:
+        session.run(
+            "py.test",
+            MODE,
+            f"--junitxml=system_{session.python}_sponge_log.xml",
+            system_test_folder_path,
+            *session.posargs,
+        )
+
+
+@nox.session(python=DEFAULT_PYTHON_VERSION)
+def cover(session):
+    """Run the final coverage report.
+
+    This outputs the coverage report aggregating coverage from the unit
+    test runs (not system test runs), and then erases coverage data.
+    """
+    session.install("coverage", "pytest-cov")
+    session.run("coverage", "report", "--show-missing", "--fail-under=100")
+
+    session.run("coverage", "erase")
+
+
+@nox.session(python=DEFAULT_PYTHON_VERSION)
+def docs(session):
+    """Build the docs for this library."""
+
+    session.install("-e", ".")
+    session.install(
+        # We need to pin to specific versions of the `sphinxcontrib-*` packages
+        # which still support sphinx 4.x.
+        # See https://github.com/googleapis/sphinx-docfx-yaml/issues/344
+        # and https://github.com/googleapis/sphinx-docfx-yaml/issues/345.
+        "sphinxcontrib-applehelp==1.0.4",
+        "sphinxcontrib-devhelp==1.0.2",
+        "sphinxcontrib-htmlhelp==2.0.1",
+        "sphinxcontrib-qthelp==1.0.3",
+        "sphinxcontrib-serializinghtml==1.1.5",
+        "sphinx==4.5.0",
+        "alabaster",
+        "recommonmark",
+    )
+
+    shutil.rmtree(os.path.join("docs", "_build"), ignore_errors=True)
+    session.run(
+        "sphinx-build",
+        "-W",  # warnings as errors
+        "-T",  # show full traceback on exception
+        "-N",  # no colors
+        "-b",
+        "html",  # builder
+        "-d",
+        os.path.join("docs", "_build", "doctrees", ""),  # cache directory
+        # paths to build:
+        os.path.join("docs", ""),
+        os.path.join("docs", "_build", "html", ""),
+    )
+
+
+@nox.session(python=DEFAULT_PYTHON_VERSION)
+def docfx(session):
+    """Build the docfx yaml files for this library."""
+
+    session.install("-e", ".")
+    session.install(
+        # We need to pin to specific versions of the `sphinxcontrib-*` packages
+        # which still support sphinx 4.x.
+        # See https://github.com/googleapis/sphinx-docfx-yaml/issues/344
+        # and https://github.com/googleapis/sphinx-docfx-yaml/issues/345.
+        "sphinxcontrib-applehelp==1.0.4",
+        "sphinxcontrib-devhelp==1.0.2",
+        "sphinxcontrib-htmlhelp==2.0.1",
+        "sphinxcontrib-qthelp==1.0.3",
+        "sphinxcontrib-serializinghtml==1.1.5",
+        "gcp-sphinx-docfx-yaml",
+        "alabaster",
+        "recommonmark",
+    )
+
+    shutil.rmtree(os.path.join("docs", "_build"), ignore_errors=True)
+    session.run(
+        "sphinx-build",
+        "-T",  # show full traceback on exception
+        "-N",  # no colors
+        "-D",
+        (
+            "extensions=sphinx.ext.autodoc,"
+            "sphinx.ext.autosummary,"
+            "docfx_yaml.extension,"
+            "sphinx.ext.intersphinx,"
+            "sphinx.ext.coverage,"
+            "sphinx.ext.napoleon,"
+            "sphinx.ext.todo,"
+            "sphinx.ext.viewcode,"
+            "recommonmark"
+        ),
+        "-b",
+        "html",
+        "-d",
+        os.path.join("docs", "_build", "doctrees", ""),
+        os.path.join("docs", ""),
+        os.path.join("docs", "_build", "html", ""),
+    )
+
+
+@nox.session(python=PREVIEW_PYTHON_VERSION)
+def prerelease_deps(session):
+    """
+    Run all tests with pre-release versions of dependencies installed
+    rather than the standard non pre-release versions.
+    Pre-release versions can be installed using
+    `pip install --pre <package>`.
+    """
+
+    # Install all dependencies
+    session.install("-e", ".")
+
+    # Install dependencies for the unit test environment
+    unit_deps_all = UNIT_TEST_STANDARD_DEPENDENCIES + UNIT_TEST_EXTERNAL_DEPENDENCIES
+    session.install(*unit_deps_all)
+
+    # Install dependencies for the system test environment
+    system_deps_all = (
+        SYSTEM_TEST_STANDARD_DEPENDENCIES
+        + SYSTEM_TEST_EXTERNAL_DEPENDENCIES
+        + SYSTEM_TEST_EXTRAS
+    )
+    session.install(*system_deps_all)
+
+    # Because we test minimum dependency versions on the minimum Python
+    # version, the first version we test with in the unit tests sessions has a
+    # constraints file containing all dependencies and extras.
+    with open(
+        CURRENT_DIRECTORY / "testing" / f"constraints-{ALL_PYTHON[0]}.txt",
+        encoding="utf-8",
+    ) as constraints_file:
+        constraints_text = constraints_file.read()
+
+    # Ignore leading whitespace and comment lines.
+    constraints_deps = [
+        match.group(1)
+        for match in re.finditer(
+            r"^\s*([^#\s=]+)", constraints_text, flags=re.MULTILINE
+        )
+    ]
+
+    # Install dependencies specified in `testing/constraints-X.txt`.
+    session.install(*constraints_deps)
+
+    # Note: If a dependency is added to the `prerel_deps` list,
+    # the `core_dependencies_from_source` list in the `core_deps_from_source`
+    # nox session should also be updated.
+    prerel_deps = [
+        "spannerlib-python",
+    ]
+
+    for dep in prerel_deps:
+        session.install("--pre", "--no-deps", "--ignore-installed", dep)
+        # TODO(https://github.com/grpc/grpc/issues/38965): Add `grpcio-status``
+        # to the dictionary below once this bug is fixed.
+        # TODO(https://github.com/googleapis/google-cloud-python/issues/13643): Add
+        # `googleapis-common-protos` and `grpc-google-iam-v1` to the dictionary below
+        # once this bug is fixed.
+        package_namespaces = {
+            "spannerlib-python": "google.cloud.spannerlib",
+        }
+
+        version_namespace = package_namespaces.get(dep)
+
+        print(f"Installed {dep}")
+        if version_namespace:
+            session.run(
+                "python",
+                "-c",
+                f"import {version_namespace}; print({version_namespace}.__version__)",
+            )
+
+    session.run(
+        "py.test",
+        "tests/unit",
+        env={},
+    )
+
+
+@nox.session(python=DEFAULT_PYTHON_VERSION)
+def core_deps_from_source(session):
+    """Run all tests with core dependencies installed from source
+    rather than pulling the dependencies from PyPI.
+    """
+
+    # Install all dependencies
+    session.install("-e", ".")
+
+    # Install dependencies for the unit test environment
+    unit_deps_all = UNIT_TEST_STANDARD_DEPENDENCIES + UNIT_TEST_EXTERNAL_DEPENDENCIES
+    session.install(*unit_deps_all)
+
+    # Install dependencies for the system test environment
+    system_deps_all = (
+        SYSTEM_TEST_STANDARD_DEPENDENCIES
+        + SYSTEM_TEST_EXTERNAL_DEPENDENCIES
+        + SYSTEM_TEST_EXTRAS
+    )
+    session.install(*system_deps_all)
+
+    # Because we test minimum dependency versions on the minimum Python
+    # version, the first version we test with in the unit tests sessions has a
+    # constraints file containing all dependencies and extras.
+    with open(
+        CURRENT_DIRECTORY / "testing" / f"constraints-{ALL_PYTHON[0]}.txt",
+        encoding="utf-8",
+    ) as constraints_file:
+        constraints_text = constraints_file.read()
+
+    # Ignore leading whitespace and comment lines.
+    constraints_deps = [
+        match.group(1)
+        for match in re.finditer(
+            r"^\s*([^#\s=]+)", constraints_text, flags=re.MULTILINE
+        )
+    ]
+
+    # Install dependencies specified in `testing/constraints-X.txt`.
+    session.install(*constraints_deps)
+
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2358): `grpcio` and
+    # `grpcio-status` should be added to the list below so that they are installed from source,
+    # rather than PyPI.
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2357): `protobuf` should be
+    # added to the list below so that it is installed from source, rather than PyPI
+    # Note: If a dependency is added to the `core_dependencies_from_source` list,
+    # the `prerel_deps` list in the `prerelease_deps` nox session should also be updated.
+    core_dependencies_from_source = []
+
+    for dep in core_dependencies_from_source:
+        session.install(dep, "--no-deps", "--ignore-installed")
+        print(f"Installed {dep}")
+
+    session.run(
+        "py.test",
+        "tests/unit",
+        env={},
+    )
+
+
+@nox.session
+def build(session):
+    """
+    Builds the wheel.
+    """
+    if os.path.exists("dist"):
+        shutil.rmtree("dist")
+
+    # Install build dependencies
+    session.install("build", "twine")
+
+    # Build the wheel
+    session.log("Building...")
+    session.run("python", "-m", "build")
+
+    # Check the built artifacts with twine
+    session.log("Checking artifacts with twine...")
+    artifacts = glob.glob("dist/*")
+    if not artifacts:
+        session.error("No built artifacts found in dist/ to check.")
+
+    session.run("twine", "check", *artifacts)
+
+
+@nox.session
+def install(session):
+    """
+    Install locally
+    """
+    session.install("-e", ".")
diff --git a/packages/google-cloud-spanner-dbapi-driver/setup.py b/packages/google-cloud-spanner-dbapi-driver/setup.py
new file mode 100644
index 000000000000..cfc0b06a229b
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/setup.py
@@ -0,0 +1,83 @@
+# -*- coding: utf-8 -*-
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+import io
+import os
+import re
+
+import setuptools  # type: ignore
+
+package_root = os.path.abspath(os.path.dirname(__file__))
+
+name = "google-cloud-spanner-dbapi-driver"
+
+description = "Google Cloud Spanner DBAPI 2.0 Driver"
+
+version = None
+
+with open(os.path.join(package_root, "google/cloud/spanner_driver/version.py")) as fp:
+    version_candidates = re.findall(r"__version__\s*=\s*\"([^\"]+)\"", fp.read())
+    assert len(version_candidates) == 1
+    version = version_candidates[0]
+
+release_status = "Development Status :: 1 - Planning"
+
+dependencies = [
+    "spannerlib-python",
+]
+extras = {}
+url = "https://github.com/googleapis/google-cloud-python/tree/main/packages/google-cloud-spanner-dbapi-driver"
+
+readme_filename = os.path.join(package_root, "README.rst")
+with io.open(readme_filename, encoding="utf-8") as readme_file:
+    readme = readme_file.read()
+
+packages = [
+    package
+    for package in setuptools.find_namespace_packages()
+    if package.startswith("google")
+]
+
+setuptools.setup(
+    name=name,
+    version=version,
+    description=description,
+    long_description=readme,
+    author="Google LLC",
+    author_email="googleapis-packages@google.com",
+    license="Apache 2.0",
+    url=url,
+    classifiers=[
+        release_status,
+        "Intended Audience :: Developers",
+        "License :: OSI Approved :: Apache Software License",
+        "Programming Language :: Python",
+        "Programming Language :: Python :: 3",
+        "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
+        "Programming Language :: Python :: 3.13",
+        "Programming Language :: Python :: 3.14",
+        "Operating System :: OS Independent",
+        "Topic :: Database",
+    ],
+    platforms="Posix; MacOS X; Windows",
+    packages=packages,
+    python_requires=">=3.10",
+    install_requires=dependencies,
+    extras_require=extras,
+    include_package_data=True,
+    zip_safe=False,
+)
diff --git a/packages/google-cloud-spanner-dbapi-driver/testing/constraints-3.10.txt b/packages/google-cloud-spanner-dbapi-driver/testing/constraints-3.10.txt
new file mode 100644
index 000000000000..2d4c01d5696a
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/testing/constraints-3.10.txt
@@ -0,0 +1,4 @@
+# -*- coding: utf-8 -*-
+# This constraints file is required for unit tests.
+# List all library dependencies and extras in this file.
+spannerlib-python
diff --git a/packages/google-cloud-spanner-dbapi-driver/testing/constraints-3.11.txt b/packages/google-cloud-spanner-dbapi-driver/testing/constraints-3.11.txt
new file mode 100644
index 000000000000..2d4c01d5696a
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/testing/constraints-3.11.txt
@@ -0,0 +1,4 @@
+# -*- coding: utf-8 -*-
+# This constraints file is required for unit tests.
+# List all library dependencies and extras in this file.
+spannerlib-python
diff --git a/packages/google-cloud-spanner-dbapi-driver/testing/constraints-3.12.txt b/packages/google-cloud-spanner-dbapi-driver/testing/constraints-3.12.txt
new file mode 100644
index 000000000000..2d4c01d5696a
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/testing/constraints-3.12.txt
@@ -0,0 +1,4 @@
+# -*- coding: utf-8 -*-
+# This constraints file is required for unit tests.
+# List all library dependencies and extras in this file.
+spannerlib-python
diff --git a/packages/google-cloud-spanner-dbapi-driver/testing/constraints-3.13.txt b/packages/google-cloud-spanner-dbapi-driver/testing/constraints-3.13.txt
new file mode 100644
index 000000000000..2d4c01d5696a
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/testing/constraints-3.13.txt
@@ -0,0 +1,4 @@
+# -*- coding: utf-8 -*-
+# This constraints file is required for unit tests.
+# List all library dependencies and extras in this file.
+spannerlib-python
diff --git a/packages/google-cloud-spanner-dbapi-driver/testing/constraints-3.14.txt b/packages/google-cloud-spanner-dbapi-driver/testing/constraints-3.14.txt
new file mode 100644
index 000000000000..2d4c01d5696a
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/testing/constraints-3.14.txt
@@ -0,0 +1,4 @@
+# -*- coding: utf-8 -*-
+# This constraints file is required for unit tests.
+# List all library dependencies and extras in this file.
+spannerlib-python
diff --git a/packages/google-cloud-spanner-dbapi-driver/tests/__init__.py b/packages/google-cloud-spanner-dbapi-driver/tests/__init__.py
new file mode 100644
index 000000000000..aeaeaa42f43f
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/tests/__init__.py
@@ -0,0 +1,15 @@
+#  Copyright 2026 Google LLC
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+# This file is intentionally left blank to mark this directory as a package.
diff --git a/packages/google-cloud-spanner-dbapi-driver/tests/system/__init__.py b/packages/google-cloud-spanner-dbapi-driver/tests/system/__init__.py
new file mode 100644
index 000000000000..aeaeaa42f43f
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/tests/system/__init__.py
@@ -0,0 +1,15 @@
+#  Copyright 2026 Google LLC
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+# This file is intentionally left blank to mark this directory as a package.
diff --git a/packages/google-cloud-spanner-dbapi-driver/tests/system/test_placeholder.py b/packages/google-cloud-spanner-dbapi-driver/tests/system/test_placeholder.py
new file mode 100644
index 000000000000..f099f454e2b2
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/tests/system/test_placeholder.py
@@ -0,0 +1,18 @@
+#  Copyright 2026 Google LLC
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+
+class TestPlaceholder:
+    def test_placeholder(self):
+        assert True
diff --git a/packages/google-cloud-spanner-dbapi-driver/tests/unit/__init__.py b/packages/google-cloud-spanner-dbapi-driver/tests/unit/__init__.py
new file mode 100644
index 000000000000..aeaeaa42f43f
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/tests/unit/__init__.py
@@ -0,0 +1,15 @@
+#  Copyright 2026 Google LLC
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+# This file is intentionally left blank to mark this directory as a package.
diff --git a/packages/google-cloud-spanner-dbapi-driver/tests/unit/test_placeholder.py b/packages/google-cloud-spanner-dbapi-driver/tests/unit/test_placeholder.py
new file mode 100644
index 000000000000..f099f454e2b2
--- /dev/null
+++ b/packages/google-cloud-spanner-dbapi-driver/tests/unit/test_placeholder.py
@@ -0,0 +1,18 @@
+#  Copyright 2026 Google LLC
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+
+class TestPlaceholder:
+    def test_placeholder(self):
+        assert True