diff --git a/src/google/adk/cli/cli_deploy.py b/src/google/adk/cli/cli_deploy.py
index d630cc5b88..fe8d309b70 100644
--- a/src/google/adk/cli/cli_deploy.py
+++ b/src/google/adk/cli/cli_deploy.py
@@ -749,6 +749,52 @@ def _get_ignore_patterns_func(
   return shutil.ignore_patterns(*patterns)
 
 
+def _stage_extra_packages(
+    requested_packages: list[tuple[str, str]], temp_folder: str
+) -> list[str]:
+  """Copies additional packages into a deployment build context."""
+  staged_packages = []
+  for package, base_dir in requested_packages:
+    package_source = (
+        package if os.path.isabs(package) else os.path.join(base_dir, package)
+    )
+    package_source = os.path.abspath(package_source)
+    if not os.path.exists(package_source):
+      raise click.ClickException(f'extra_packages path not found: {package}')
+
+    basename = os.path.basename(os.path.normpath(package_source))
+    destination = os.path.join(temp_folder, basename)
+    # The Dockerfile may not have been written yet, so reserve its name.
+    if os.path.exists(destination) or basename == 'Dockerfile':
+      raise click.ClickException(
+          f'extra_packages entry has a conflicting name: {basename}'
+      )
+    if os.path.isdir(package_source):
+      shutil.copytree(package_source, destination, dirs_exist_ok=True)
+    else:
+      shutil.copy2(package_source, destination)
+    staged_packages.append(basename)
+
+  return staged_packages
+
+
+def _extra_packages_dockerfile_copy(
+    staged_packages: list[str], temp_folder: str
+) -> str:
+  """Builds Dockerfile instructions for staged extra packages."""
+  if not staged_packages:
+    return ''
+
+  copy_lines = [
+      f'COPY --chown=myuser:myuser "{basename}/" "/app/{basename}/"'
+      if os.path.isdir(os.path.join(temp_folder, basename))
+      else f'COPY --chown=myuser:myuser "{basename}" "/app/{basename}"'
+      for basename in staged_packages
+  ]
+  copy_lines.append('ENV PYTHONPATH="/app:$PYTHONPATH"')
+  return '\n'.join(copy_lines)
+
+
 def to_cloud_run(
     *,
     agent_folder: str,
@@ -773,6 +819,7 @@ def to_cloud_run(
     trigger_sources: Optional[str] = None,
     extra_gcloud_args: Optional[tuple[str, ...]] = None,
     with_cloud_run_sandbox: bool = False,
+    extra_packages: Optional[list[str]] = None,
 ) -> None:
   """Deploys an agent to Google Cloud Run.
 
@@ -811,6 +858,8 @@ def to_cloud_run(
     use_local_storage: Whether to use local .adk storage in the container.
     with_cloud_run_sandbox: Whether to enable the Cloud Run sandbox for code
       execution.
+    extra_packages: Additional local files or directories to stage alongside
+      the agent and make importable in the deployed image.
   """
   app_name = app_name or os.path.basename(agent_folder)
   if parse(adk_version) >= parse('1.3.0') and not use_local_storage:
@@ -830,6 +879,10 @@ def to_cloud_run(
     agent_src_path = os.path.join(temp_folder, 'agents', app_name)
     ignore_func = _get_ignore_patterns_func(agent_folder)
     shutil.copytree(agent_folder, agent_src_path, ignore=ignore_func)
+    staged_extra_packages = _stage_extra_packages(
+        [(package, os.getcwd()) for package in extra_packages or []],
+        temp_folder,
+    )
     requirements_txt_path = os.path.join(agent_src_path, 'requirements.txt')
     install_agent_deps = (
         f'RUN pip install -r "/app/agents/{app_name}/requirements.txt"'
@@ -871,7 +924,9 @@ def to_cloud_run(
         trigger_sources_option=trigger_sources_option,
         gemini_enterprise_option='',
         express_mode_option='',
-        extra_packages_copy='',
+        extra_packages_copy=_extra_packages_dockerfile_copy(
+            staged_extra_packages, temp_folder
+        ),
     )
     dockerfile_path = os.path.join(temp_folder, 'Dockerfile')
     os.makedirs(temp_folder, exist_ok=True)
@@ -1179,24 +1234,9 @@ def to_agent_engine(
     requested_extra_packages = [
         (pkg, original_cwd) for pkg in extra_packages or []
     ] + [(pkg, agent_folder_abs) for pkg in config_extra_packages]
-    staged_extra_packages = []
-    for pkg, base_dir in requested_extra_packages:
-      pkg_src = pkg if os.path.isabs(pkg) else os.path.join(base_dir, pkg)
-      pkg_src = os.path.abspath(pkg_src)
-      if not os.path.exists(pkg_src):
-        raise click.ClickException(f'extra_packages path not found: {pkg}')
-      base = os.path.basename(os.path.normpath(pkg_src))
-      dst = os.path.join(temp_folder_path, base)
-      # The Dockerfile is written after this loop, so it is not on disk yet.
-      if os.path.exists(dst) or base == 'Dockerfile':
-        raise click.ClickException(
-            f'extra_packages entry has a conflicting name: {base}'
-        )
-      if os.path.isdir(pkg_src):
-        shutil.copytree(pkg_src, dst, dirs_exist_ok=True)
-      else:
-        shutil.copy2(pkg_src, dst)
-      staged_extra_packages.append(base)
+    staged_extra_packages = _stage_extra_packages(
+        requested_extra_packages, temp_folder_path
+    )
 
     requirements_txt_path = os.path.join(agent_src_path, 'requirements.txt')
     if requirements_file:
@@ -1349,16 +1389,9 @@ def create_dockerfile_for_agent_engine(resource_name: str) -> None:
       trigger_sources_option = (
           f'--trigger_sources={trigger_sources}' if trigger_sources else ''
       )
-      extra_packages_copy = ''
-      if staged_extra_packages:
-        copy_lines = [
-            f'COPY --chown=myuser:myuser "{base}/" "/app/{base}/"'
-            if os.path.isdir(os.path.join(temp_folder_path, base))
-            else f'COPY --chown=myuser:myuser "{base}" "/app/{base}"'
-            for base in staged_extra_packages
-        ]
-        copy_lines.append('ENV PYTHONPATH="/app:$PYTHONPATH"')
-        extra_packages_copy = '\n'.join(copy_lines)
+      extra_packages_copy = _extra_packages_dockerfile_copy(
+          staged_extra_packages, temp_folder_path
+      )
       agent_engine_uri = f'agentengine://{resource_name}'
       dockerfile_content = _DOCKERFILE_TEMPLATE.format(
           gcp_project_id=project,
@@ -1461,6 +1494,7 @@ def to_gke(
     service_type: Literal[
         'ClusterIP', 'NodePort', 'LoadBalancer'
     ] = 'ClusterIP',
+    extra_packages: Optional[list[str]] = None,
 ) -> None:
   """Deploys an agent to Google Kubernetes Engine(GKE).
 
@@ -1489,6 +1523,8 @@ def to_gke(
     memory_service_uri: The URI of the memory service.
     use_local_storage: Whether to use local .adk storage in the container.
     service_type: The Kubernetes Service type (default: ClusterIP).
+    extra_packages: Additional local files or directories to stage alongside
+      the agent and make importable in the deployed image.
   """
   click.secho(
       '\n🚀 Starting ADK Agent Deployment to GKE...', fg='cyan', bold=True
@@ -1520,6 +1556,10 @@ def to_gke(
     agent_src_path = os.path.join(temp_folder, 'agents', app_name)
     ignore_func = _get_ignore_patterns_func(agent_folder)
     shutil.copytree(agent_folder, agent_src_path, ignore=ignore_func)
+    staged_extra_packages = _stage_extra_packages(
+        [(package, os.getcwd()) for package in extra_packages or []],
+        temp_folder,
+    )
     requirements_txt_path = os.path.join(agent_src_path, 'requirements.txt')
     install_agent_deps = (
         f'RUN pip install -r "/app/agents/{app_name}/requirements.txt"'
@@ -1561,7 +1601,9 @@ def to_gke(
         ),
         gemini_enterprise_option='',
         express_mode_option='',
-        extra_packages_copy='',
+        extra_packages_copy=_extra_packages_dockerfile_copy(
+            staged_extra_packages, temp_folder
+        ),
     )
     dockerfile_path = os.path.join(temp_folder, 'Dockerfile')
     os.makedirs(temp_folder, exist_ok=True)
diff --git a/src/google/adk/cli/cli_tools_click.py b/src/google/adk/cli/cli_tools_click.py
index 49fb819388..b17b7f48c3 100644
--- a/src/google/adk/cli/cli_tools_click.py
+++ b/src/google/adk/cli/cli_tools_click.py
@@ -2362,6 +2362,17 @@ async def _lifespan(app: FastAPI) -> AsyncIterator[None]:
         " execution. Requires the 'gcloud beta run deploy' release track."
     ),
 )
+@click.option(
+    "--extra_packages",
+    multiple=True,
+    type=str,
+    default=(),
+    help=(
+        "Optional. Additional local package paths (a file or directory) to"
+        " stage and deploy alongside the agent, and make importable in the"
+        " deployed image. Repeatable."
+    ),
+)
 # Kept as raw str (not parsed to list) — interpolated directly into Dockerfile CMD.
 @click.option(
     "--trigger_sources",
@@ -2407,6 +2418,7 @@ def cli_deploy_cloud_run(
     a2a: bool = False,
     trigger_sources: str | None = None,
     with_cloud_run_sandbox: bool = False,
+    extra_packages: tuple[str, ...] = (),
 ):
   """Deploys an agent to Cloud Run.
 
@@ -2451,6 +2463,7 @@ def cli_deploy_cloud_run(
         use_local_storage=use_local_storage,
         a2a=a2a,
         trigger_sources=trigger_sources,
+        extra_packages=list(extra_packages),
         extra_gcloud_args=tuple(gcloud_args),
     )
   except Exception as e:
@@ -2926,6 +2939,17 @@ def cli_deploy_agent_engine(
         " version in the dev environment)"
     ),
 )
+@click.option(
+    "--extra_packages",
+    multiple=True,
+    type=str,
+    default=(),
+    help=(
+        "Optional. Additional local package paths (a file or directory) to"
+        " stage and deploy alongside the agent, and make importable in the"
+        " deployed image. Repeatable."
+    ),
+)
 # Kept as raw str (not parsed to list) — interpolated directly into Dockerfile CMD.
 @click.option(
     "--trigger_sources",
@@ -2964,6 +2988,7 @@ def cli_deploy_gke(
     memory_service_uri: str | None = None,
     use_local_storage: bool = False,
     trigger_sources: str | None = None,
+    extra_packages: tuple[str, ...] = (),
 ):
   """Deploys an agent to GKE.
 
@@ -2998,6 +3023,7 @@ def cli_deploy_gke(
         memory_service_uri=memory_service_uri,
         use_local_storage=use_local_storage,
         trigger_sources=trigger_sources,
+        extra_packages=list(extra_packages),
     )
   except Exception as e:
     click.secho(f"Deploy failed: {e}", fg="red", err=True)
diff --git a/tests/unittests/cli/utils/test_cli_deploy.py b/tests/unittests/cli/utils/test_cli_deploy.py
index de163ee8be..11d8cca4e6 100644
--- a/tests/unittests/cli/utils/test_cli_deploy.py
+++ b/tests/unittests/cli/utils/test_cli_deploy.py
@@ -456,6 +456,51 @@ def mock_subprocess_run(*args, **kwargs):
   assert str(rmtree_recorder.get_last_call_args()[0]) == str(tmp_path)
 
 
+def test_to_gke_stages_extra_packages(
+    monkeypatch: pytest.MonkeyPatch,
+    agent_dir: Callable[[bool, bool], Path],
+    tmp_path: Path,
+) -> None:
+  src_dir = agent_dir(False, False)
+  extra_package = tmp_path / "shared_package"
+  extra_package.mkdir()
+  (extra_package / "helpers.py").write_text("VALUE = 1\n")
+  deployment_dir = tmp_path / "deployment"
+
+  def mock_subprocess_run(*args, **kwargs):
+    if args[0][:2] == ["kubectl", "apply"]:
+      return types.SimpleNamespace(stdout="deployment created")
+    return None
+
+  monkeypatch.setattr(subprocess, "run", mock_subprocess_run)
+  monkeypatch.setattr(shutil, "rmtree", _Recorder())
+
+  cli_deploy.to_gke(
+      agent_folder=str(src_dir),
+      project="gke-proj",
+      region="us-east1",
+      cluster_name="cluster",
+      service_name="svc",
+      app_name="agent",
+      temp_folder=str(deployment_dir),
+      port=8080,
+      trace_to_cloud=False,
+      otel_to_cloud=False,
+      with_ui=False,
+      log_level="info",
+      adk_version="2.7.1",
+      extra_packages=[str(extra_package)],
+  )
+
+  assert (deployment_dir / "shared_package" / "helpers.py").is_file()
+  dockerfile = (deployment_dir / "Dockerfile").read_text()
+  assert (
+      'COPY --chown=myuser:myuser "shared_package/" "/app/shared_package/"'
+      in dockerfile
+  )
+  assert 'ENV PYTHONPATH="/app:$PYTHONPATH"' in dockerfile
+
+
 def test_to_gke_uses_gcloud_cmd_on_windows(
     monkeypatch: pytest.MonkeyPatch,
     agent_dir: Callable[[bool, bool], Path],
@@ -1195,7 +1240,6 @@ def test_removes_directory_tree(self, tmp_path: Path) -> None:
 
   def test_removes_readonly_files(self, tmp_path: Path) -> None:
     """It should remove a tree containing read-only files."""
-    import os
     import stat
 
     d = tmp_path / "ro_dir"
diff --git a/tests/unittests/cli/utils/test_cli_deploy_to_cloud_run.py b/tests/unittests/cli/utils/test_cli_deploy_to_cloud_run.py
index 35ebd636ab..544541ec0b 100644
--- a/tests/unittests/cli/utils/test_cli_deploy_to_cloud_run.py
+++ b/tests/unittests/cli/utils/test_cli_deploy_to_cloud_run.py
@@ -196,6 +196,46 @@ def test_to_cloud_run_happy_path(
   assert str(rmtree_recorder.get_last_call_args()[0]) == str(tmp_path)
 
 
+def test_to_cloud_run_stages_extra_packages(
+    monkeypatch: pytest.MonkeyPatch,
+    agent_dir: AgentDirFixture,
+    tmp_path: Path,
+) -> None:
+  src_dir = agent_dir(include_requirements=False, include_env=False)
+  extra_package = tmp_path / "shared_package"
+  extra_package.mkdir()
+  (extra_package / "helpers.py").write_text("VALUE = 1\n")
+  deployment_dir = tmp_path / "deployment"
+
+  monkeypatch.setattr(subprocess, "run", _Recorder())
+  monkeypatch.setattr(shutil, "rmtree", _Recorder())
+
+  cli_deploy.to_cloud_run(
+      agent_folder=str(src_dir),
+      project="proj",
+      region="us-central1",
+      service_name="svc",
+      app_name="agent",
+      temp_folder=str(deployment_dir),
+      port=8080,
+      trace_to_cloud=False,
+      otel_to_cloud=False,
+      with_ui=False,
+      log_level="info",
+      verbosity="info",
+      adk_version="2.7.1",
+      extra_packages=[str(extra_package)],
+  )
+
+  assert (deployment_dir / "shared_package" / "helpers.py").is_file()
+  dockerfile = (deployment_dir / "Dockerfile").read_text()
+  assert (
+      'COPY --chown=myuser:myuser "shared_package/" "/app/shared_package/"'
+      in dockerfile
+  )
+  assert 'ENV PYTHONPATH="/app:$PYTHONPATH"' in dockerfile
+
+
 def test_to_cloud_run_cleans_temp_dir(
     monkeypatch: pytest.MonkeyPatch,
     agent_dir: AgentDirFixture,
diff --git a/tests/unittests/cli/utils/test_cli_tools_click.py b/tests/unittests/cli/utils/test_cli_tools_click.py
index dddda4471f..d0e5b8b4c5 100644
--- a/tests/unittests/cli/utils/test_cli_tools_click.py
+++ b/tests/unittests/cli/utils/test_cli_tools_click.py
@@ -1203,6 +1203,29 @@ def test_cli_deploy_cloud_run_success(
   assert rec.calls, "cli_deploy.to_cloud_run must be invoked"
 
 
+def test_cli_deploy_cloud_run_forwards_extra_packages(
+    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
+) -> None:
+  rec = _Recorder()
+  monkeypatch.setattr("google.adk.cli.cli_deploy.to_cloud_run", rec)
+  agent_dir = tmp_path / "agent"
+  agent_dir.mkdir()
+
+  result = CliRunner().invoke(
+      cli_tools_click.main,
+      [
+          "deploy",
+          "cloud_run",
+          "--extra_packages=shared_a",
+          "--extra_packages=shared_b",
+          str(agent_dir),
+      ],
+  )
+
+  assert result.exit_code == 0
+  assert rec.calls[0][1]["extra_packages"] == ["shared_a", "shared_b"]
+
+
 def test_cli_deploy_cloud_run_failure(
     tmp_path: Path, monkeypatch: pytest.MonkeyPatch
 ) -> None:
@@ -1508,6 +1531,30 @@ def test_cli_deploy_gke_success(
   assert called_kwargs.get("cluster_name") == "my-cluster"
 
 
+def test_cli_deploy_gke_forwards_extra_packages(
+    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
+) -> None:
+  rec = _Recorder()
+  monkeypatch.setattr("google.adk.cli.cli_deploy.to_gke", rec)
+  agent_dir = tmp_path / "agent"
+  agent_dir.mkdir()
+
+  result = CliRunner().invoke(
+      cli_tools_click.main,
+      [
+          "deploy",
+          "gke",
+          "--cluster_name=cluster",
+          "--extra_packages=shared_a",
+          "--extra_packages=shared_b",
+          str(agent_dir),
+      ],
+  )
+
+  assert result.exit_code == 0
+  assert rec.calls[0][1]["extra_packages"] == ["shared_a", "shared_b"]
+
+
 # cli eval
 def test_cli_eval_missing_deps_raises(
     tmp_path: Path, monkeypatch: pytest.MonkeyPatch