diff --git a/tools/ndk/.gitignore b/tools/ndk/.gitignore
new file mode 100644
index 000000000..a81c8ee12
--- /dev/null
+++ b/tools/ndk/.gitignore
@@ -0,0 +1,138 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
diff --git a/tools/ndk/OWNERS b/tools/ndk/OWNERS
new file mode 100644
index 000000000..7310b199a
--- /dev/null
+++ b/tools/ndk/OWNERS
@@ -0,0 +1,4 @@
+danalbert@google.com
+enh@google.com
+hhb@google.com
+rprichard@google.com
diff --git a/tools/ndk/build_ndk_docs.py b/tools/ndk/build_ndk_docs.py
new file mode 100755
index 000000000..9a36362b3
--- /dev/null
+++ b/tools/ndk/build_ndk_docs.py
@@ -0,0 +1,84 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2020 The Android Open Source Project
+#
+# 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.
+#
+"""Generates the NDK API docs for local viewing.
+
+Note that the local docs will not exactly match the docs that are uploaded to
+devsite. The theming is different and the per-file view is not available.
+Ensure that your documentation is accessible from the module view or it will
+not be discoverable on devsite.
+"""
+import argparse
+import os
+from pathlib import Path
+import shutil
+import subprocess
+import sys
+
+THIS_DIR = Path(__file__).resolve().parent
+ANDROID_TOP = THIS_DIR.parents[2]
+
+
+def check_environment() -> None:
+    """Validates that we have everything we need from the environment."""
+    if shutil.which('doxygen') is None:
+        sys.exit('Doxygen not found. Run `sudo apt install doxygen`.')
+
+    if 'ANDROID_PRODUCT_OUT' not in os.environ:
+        sys.exit('Could not find ANDROID_PRODUCT_OUT. Run lunch.')
+
+
+def build_ndk() -> None:
+    """Builds the NDK sysroot."""
+    subprocess.run(["build/soong/soong_ui.bash", "--make-mode", "ndk"],
+                   cwd=ANDROID_TOP,
+                   check=True)
+
+
+def generate_docs() -> None:
+    """Generates the NDK API reference."""
+    product_out = Path(os.environ['ANDROID_PRODUCT_OUT'])
+    out_dir = product_out.parents[1] / 'common/ndk-docs'
+    html_dir = out_dir / 'html'
+    input_dir = product_out.parents[2] / 'soong/ndk/sysroot/usr/include'
+    doxyfile_template = ANDROID_TOP / 'frameworks/native/docs/Doxyfile'
+    doxyfile = out_dir / 'Doxyfile'
+
+    doxyfile_contents = doxyfile_template.read_text()
+    doxyfile_contents += f'\nINPUT={input_dir}\nHTML_OUTPUT={html_dir}'
+    doxyfile.write_text(doxyfile_contents)
+
+    subprocess.run(['doxygen', str(doxyfile)], cwd=ANDROID_TOP, check=True)
+    index = html_dir / 'index.html'
+    print(f'Generated NDK API documentation to {index.as_uri()}')
+
+
+def parse_args() -> argparse.Namespace:
+    """Parses command line arguments."""
+    parser = argparse.ArgumentParser(description=sys.modules[__name__].__doc__)
+    return parser.parse_args()
+
+
+def main() -> None:
+    """Program entry point."""
+    _ = parse_args()
+    check_environment()
+    build_ndk()
+    generate_docs()
+
+
+if __name__ == '__main__':
+    main()