diff --git a/src/google/adk/cli/cli_deploy.py b/src/google/adk/cli/cli_deploy.py
index d26b3c9660..2835706e51 100644
--- a/src/google/adk/cli/cli_deploy.py
+++ b/src/google/adk/cli/cli_deploy.py
@@ -15,6 +15,7 @@
 
 import json
 import os
+from pathlib import Path
 import shutil
 import subprocess
 from typing import Final
@@ -43,7 +44,7 @@
 # Set up environment variables - End
 
 # Install ADK - Start
-RUN pip install google-adk=={adk_version}
+{adk_install_instructions}
 # Install ADK - End
 
 # Copy agent - Start
@@ -246,6 +247,10 @@ def to_cloud_run(
     )
     click.echo('Copying agent source code completed.')
 
+    adk_install_instructions = (
+        f'RUN pip install google-adk=={adk_version}'
+    )
+
     # create Dockerfile
     click.echo('Creating Dockerfile...')
     host_option = '--host=0.0.0.0' if adk_version > '0.5.0' else ''
@@ -268,6 +273,7 @@ def to_cloud_run(
         ),
         trace_to_cloud_option='--trace_to_cloud' if trace_to_cloud else '',
         allow_origins_option=allow_origins_option,
+        adk_install_instructions=adk_install_instructions,
         adk_version=adk_version,
         host_option=host_option,
         a2a_option=a2a_option,
@@ -622,6 +628,8 @@ def to_gke(
     artifact_service_uri: Optional[str] = None,
     memory_service_uri: Optional[str] = None,
     a2a: bool = False,
+    editable: bool = False,
+    service_account_name: Optional[str] = None,
 ):
   """Deploys an agent to Google Kubernetes Engine(GKE).
 
@@ -645,6 +653,7 @@ def to_gke(
     session_service_uri: The URI of the session service.
     artifact_service_uri: The URI of the artifact service.
     memory_service_uri: The URI of the memory service.
+    service_account_name: The name of the Kubernetes Service Account to use for the deployed agent pod.
   """
   click.secho(
       '\n🚀 Starting ADK Agent Deployment to GKE...', fg='cyan', bold=True
@@ -680,6 +689,22 @@ def to_gke(
     )
     click.secho('✅ Environment prepared.', fg='green')
 
+    adk_install_instructions = (
+        f'RUN pip install "google-adk=={adk_version}"'
+    )
+    if editable:
+      click.echo('  - Preparing local ADK source for editable install...')
+      # Find the project root to include pyproject.toml
+      adk_source_path = next(p for p in Path(__file__).resolve().parents if (p / 'pyproject.toml').is_file())
+      temp_adk_source_dest = Path(temp_folder) / 'adk_local_src'
+      shutil.copytree(adk_source_path, temp_adk_source_dest)
+      adk_install_instructions = (
+          '# Install ADK from local source \n'
+          'COPY --chown=myuser:myuser adk_local_src/ /app/adk_local_src/\n'
+          'RUN pip install --editable "/app/adk_local_src/[extensions]"'
+      )
+      click.secho('✅ Local ADK source prepared.', fg='green')
+
     allow_origins_option = (
         f'--allow_origins={",".join(allow_origins)}' if allow_origins else ''
     )
@@ -703,6 +728,7 @@ def to_gke(
         ),
         trace_to_cloud_option='--trace_to_cloud' if trace_to_cloud else '',
         allow_origins_option=allow_origins_option,
+        adk_install_instructions=adk_install_instructions,
         adk_version=adk_version,
         host_option=host_option,
         a2a_option='--a2a' if a2a else '',
@@ -742,6 +768,10 @@ def to_gke(
 
     # Create a Kubernetes deployment
     click.echo('  - Creating Kubernetes deployment.yaml...')
+    sa_yaml_block = ''
+    if service_account_name:
+      # The newline at the end is important for correct YAML formatting.
+      sa_yaml_block = f'serviceAccountName: {service_account_name}\n'
     deployment_yaml = f"""
 apiVersion: apps/v1
 kind: Deployment
@@ -766,6 +796,7 @@ def to_gke(
         app.kubernetes.io/instance: {service_name}
         app.kubernetes.io/managed-by: adk-cli
     spec:
+      {sa_yaml_block}
       containers:
       - name: {service_name}
         image: {image_name}
@@ -813,8 +844,8 @@ def to_gke(
     result = subprocess.run(
         ['kubectl', 'apply', '-f', temp_folder],
         check=True,
-        capture_output=True,  # <-- Add this
-        text=True,  # <-- Add this
+        capture_output=True,
+        text=True,
     )
 
     # 2. Print the captured output line by line
diff --git a/src/google/adk/cli/cli_tools_click.py b/src/google/adk/cli/cli_tools_click.py
index c45fdd37ea..a99f24add5 100644
--- a/src/google/adk/cli/cli_tools_click.py
+++ b/src/google/adk/cli/cli_tools_click.py
@@ -1285,6 +1285,11 @@ def cli_deploy_agent_engine(
         " of the AGENT source code)."
     ),
 )
+@click.option(
+    "--service-account-name",
+    default=None,
+    help="Optional. Name of the K8s Service Account for the pod.",
+)
 @click.option(
     "--port",
     type=int,
@@ -1351,6 +1356,7 @@ def cli_deploy_gke(
     cluster_name: str,
     service_name: str,
     app_name: str,
+    service_account_name: Optional[str],
     temp_folder: str,
     port: int,
     trace_to_cloud: bool,
@@ -1377,6 +1383,7 @@ def cli_deploy_gke(
         cluster_name=cluster_name,
         service_name=service_name,
         app_name=app_name,
+        service_account_name=service_account_name,
         temp_folder=temp_folder,
         port=port,
         trace_to_cloud=trace_to_cloud,
diff --git a/tests/unittests/cli/utils/test_cli_deploy.py b/tests/unittests/cli/utils/test_cli_deploy.py
index b2a31f70f3..2b1ec5b3c5 100644
--- a/tests/unittests/cli/utils/test_cli_deploy.py
+++ b/tests/unittests/cli/utils/test_cli_deploy.py
@@ -388,6 +388,104 @@ def mock_subprocess_run(*args, **kwargs):
   assert f"containerPort: 9090" in yaml_content
   assert f"targetPort: 9090" in yaml_content
   assert "type: LoadBalancer" in yaml_content
+  assert "serviceAccountName:" not in yaml_content
 
   # 4. Verify cleanup
   assert str(rmtree_recorder.get_last_call_args()[0]) == str(tmp_path)
+
+def test_to_gke_with_service_account(
+    monkeypatch: pytest.MonkeyPatch,
+    agent_dir: Callable[[bool, bool], Path],
+    tmp_path: Path,
+) -> None:
+  """
+  Tests that `to_gke` correctly adds the serviceAccountName to the
+  deployment manifest when the parameter is provided.
+  """
+  src_dir = agent_dir(False, False)
+  monkeypatch.setattr(subprocess, "run", lambda *a, **k: types.SimpleNamespace(stdout=""))
+  monkeypatch.setattr(shutil, "rmtree", lambda *a, **k: None)
+
+  # Execute with the new service_account_name parameter
+  cli_deploy.to_gke(
+      agent_folder=str(src_dir),
+      project="gke-proj",
+      region="us-east1",
+      cluster_name="my-gke-cluster",
+      service_name="gke-svc",
+      app_name="agent",
+      temp_folder=str(tmp_path),
+      port=9090,
+      trace_to_cloud=False,
+      with_ui=False,
+      log_level="debug",
+      adk_version="1.2.0",
+      service_account_name="my-test-sa",
+  )
+
+  deployment_yaml_path = tmp_path / "deployment.yaml"
+  assert deployment_yaml_path.is_file()
+  yaml_content = deployment_yaml_path.read_text()
+
+  assert "serviceAccountName: my-test-sa" in yaml_content
+
+def test_to_gke_editable_mode(
+    monkeypatch: pytest.MonkeyPatch,
+    agent_dir: Callable[[bool, bool], Path],
+    tmp_path: Path,
+) -> None:
+  """
+  Tests that `to_gke` with `editable=True` generates the correct Dockerfile.
+
+  Verifies:
+  1. The local ADK source is copied (mocked).
+  2. The Dockerfile contains `COPY` and `pip install --editable` commands.
+  3. The Dockerfile does NOT contain the standard `pip install from pypi`.
+  """
+  src_dir = agent_dir(False, False)
+  # Mock subprocess and cleanup functions
+  monkeypatch.setattr(subprocess, "run", lambda *a, **k: types.SimpleNamespace(stdout=""))
+  monkeypatch.setattr(shutil, "rmtree", lambda *a, **k: None)
+
+  # Mock the shutil.copytree to avoid actual file operations for the ADK source
+  copytree_recorder = _Recorder()
+  # The first call will be for the agent, the second for the ADK source
+  original_copytree = shutil.copytree
+  def mock_copytree(src, dst, **kwargs):
+    copytree_recorder(src, dst, **kwargs)
+    # We still need to copy the agent for the test to proceed
+    if "agent" in str(src):
+      original_copytree(src, dst, **kwargs)
+
+  monkeypatch.setattr(shutil, "copytree", mock_copytree)
+
+  # Execute
+  cli_deploy.to_gke(
+      agent_folder=str(src_dir),
+      project="gke-proj",
+      region="us-east1",
+      cluster_name="my-gke-cluster",
+      service_name="gke-svc",
+      app_name="agent",
+      temp_folder=str(tmp_path),
+      port=9090,
+      trace_to_cloud=False,
+      with_ui=False,
+      log_level="debug",
+      adk_version="1.2.0",
+      editable=True, # Test the new editable path
+  )
+
+  # 1. Verify that copytree was called for the ADK source
+  assert len(copytree_recorder.calls) == 2
+  adk_source_copy_call = copytree_recorder.calls[1][0]
+  assert str(adk_source_copy_call[1]) == str(tmp_path / "adk_local_src")
+
+  # 2. Verify Dockerfile content for editable mode
+  dockerfile_path = tmp_path / "Dockerfile"
+  assert dockerfile_path.is_file()
+  dockerfile_content = dockerfile_path.read_text()
+
+  assert "COPY --chown=myuser:myuser adk_local_src/ /app/adk_local_src/" in dockerfile_content
+  assert 'RUN pip install --editable "/app/adk_local_src/[extensions]"' in dockerfile_content
+  assert "RUN pip install google-adk==" not in dockerfile_content