diff --git a/tests/unit/vertex_adk/test_agent_engine_templates_adk.py b/tests/unit/vertex_adk/test_agent_engine_templates_adk.py
index 2b0f06cece..b4f41aeb3d 100644
--- a/tests/unit/vertex_adk/test_agent_engine_templates_adk.py
+++ b/tests/unit/vertex_adk/test_agent_engine_templates_adk.py
@@ -18,6 +18,7 @@
 import os
 import cloudpickle
 import sys
+import re
 from unittest import mock
 from typing import Optional
 
@@ -769,8 +770,17 @@ def test_tracing_setup(
         otlp_span_exporter_mock.assert_called_once_with(
             session=mock.ANY,
             endpoint="https://telemetry.googleapis.com/v1/traces",
+            headers=mock.ANY,
         )
 
+        user_agent = otlp_span_exporter_mock.call_args.kwargs["headers"]["User-Agent"]
+        assert (
+            re.fullmatch(
+                r"Vertex-Agent-Engine\/[\d\.]+ OTel-OTLP-Exporter-Python\/[\d\.]+",
+                user_agent,
+            )
+            is not None
+        )
         assert (
             trace_provider_mock.call_args.kwargs["resource"].attributes
             == expected_attributes
diff --git a/tests/unit/vertex_adk/test_reasoning_engine_templates_adk.py b/tests/unit/vertex_adk/test_reasoning_engine_templates_adk.py
index add706859a..e06be088a9 100644
--- a/tests/unit/vertex_adk/test_reasoning_engine_templates_adk.py
+++ b/tests/unit/vertex_adk/test_reasoning_engine_templates_adk.py
@@ -17,6 +17,7 @@
 import importlib
 import json
 import os
+import re
 from unittest import mock
 from typing import Optional
 
@@ -723,8 +724,17 @@ def test_tracing_setup(
         otlp_span_exporter_mock.assert_called_once_with(
             session=mock.ANY,
             endpoint="https://telemetry.googleapis.com/v1/traces",
+            headers=mock.ANY,
         )
 
+        user_agent = otlp_span_exporter_mock.call_args.kwargs["headers"]["User-Agent"]
+        assert (
+            re.fullmatch(
+                r"Vertex-Agent-Engine\/[\d\.]+ OTel-OTLP-Exporter-Python\/[\d\.]+",
+                user_agent,
+            )
+            is not None
+        )
         assert (
             trace_provider_mock.call_args.kwargs["resource"].attributes
             == expected_attributes
diff --git a/vertexai/agent_engines/templates/adk.py b/vertexai/agent_engines/templates/adk.py
index 0276b4f434..7e21e6c680 100644
--- a/vertexai/agent_engines/templates/adk.py
+++ b/vertexai/agent_engines/templates/adk.py
@@ -357,8 +357,10 @@ def _detect_cloud_resource_id(project_id: str) -> Optional[str]:
 
     if enable_tracing:
         try:
+            import opentelemetry.exporter.otlp.proto.http.version
             import opentelemetry.exporter.otlp.proto.http.trace_exporter
             import google.auth.transport.requests
+            from google.cloud.aiplatform import version as aip_version
         except (ImportError, AttributeError):
             return _warn_missing_dependency(
                 "opentelemetry-exporter-otlp-proto-http", needed_for_tracing=True
@@ -367,12 +369,17 @@ def _detect_cloud_resource_id(project_id: str) -> Optional[str]:
         import google.auth
 
         credentials, _ = google.auth.default()
+        vertex_sdk_version = aip_version.__version__
+        otlp_http_version = opentelemetry.exporter.otlp.proto.http.version.__version__
+        user_agent = f"Vertex-Agent-Engine/{vertex_sdk_version} OTel-OTLP-Exporter-Python/{otlp_http_version}"
+
         span_exporter = (
             opentelemetry.exporter.otlp.proto.http.trace_exporter.OTLPSpanExporter(
                 session=google.auth.transport.requests.AuthorizedSession(
                     credentials=credentials
                 ),
                 endpoint="https://telemetry.googleapis.com/v1/traces",
+                headers={"User-Agent": user_agent},
             )
         )
         span_processor = opentelemetry.sdk.trace.export.BatchSpanProcessor(
diff --git a/vertexai/preview/reasoning_engines/templates/adk.py b/vertexai/preview/reasoning_engines/templates/adk.py
index 9d29b71cea..a3220228ac 100644
--- a/vertexai/preview/reasoning_engines/templates/adk.py
+++ b/vertexai/preview/reasoning_engines/templates/adk.py
@@ -359,8 +359,10 @@ def _detect_cloud_resource_id(project_id: str) -> Optional[str]:
 
     if enable_tracing:
         try:
+            import opentelemetry.exporter.otlp.proto.http.version
             import opentelemetry.exporter.otlp.proto.http.trace_exporter
             import google.auth.transport.requests
+            from google.cloud.aiplatform import version as aip_version
         except (ImportError, AttributeError):
             return _warn_missing_dependency(
                 "opentelemetry-exporter-otlp-proto-http", needed_for_tracing=True
@@ -369,12 +371,17 @@ def _detect_cloud_resource_id(project_id: str) -> Optional[str]:
         import google.auth
 
         credentials, _ = google.auth.default()
+        vertex_sdk_version = aip_version.__version__
+        otlp_http_version = opentelemetry.exporter.otlp.proto.http.version.__version__
+        user_agent = f"Vertex-Agent-Engine/{vertex_sdk_version} OTel-OTLP-Exporter-Python/{otlp_http_version}"
+
         span_exporter = (
             opentelemetry.exporter.otlp.proto.http.trace_exporter.OTLPSpanExporter(
                 session=google.auth.transport.requests.AuthorizedSession(
                     credentials=credentials
                 ),
                 endpoint="https://telemetry.googleapis.com/v1/traces",
+                headers={"User-Agent": user_agent},
             )
         )
         span_processor = opentelemetry.sdk.trace.export.BatchSpanProcessor(