diff --git a/dbt-bigquery/.changes/unreleased/Features-20250904-153341.yaml b/dbt-bigquery/.changes/unreleased/Features-20250904-153341.yaml
new file mode 100644
index 000000000..753e5d48b
--- /dev/null
+++ b/dbt-bigquery/.changes/unreleased/Features-20250904-153341.yaml
@@ -0,0 +1,6 @@
+kind: Features
+body: Inject invocation_id into user agent string
+time: 2025-09-04T15:33:41.438521+12:00
+custom:
+    Author: jeremyyeo
+    Issue: "1280"
diff --git a/dbt-bigquery/src/dbt/adapters/bigquery/clients.py b/dbt-bigquery/src/dbt/adapters/bigquery/clients.py
index f151e87eb..2c52f64a0 100644
--- a/dbt-bigquery/src/dbt/adapters/bigquery/clients.py
+++ b/dbt-bigquery/src/dbt/adapters/bigquery/clients.py
@@ -9,6 +9,7 @@
 from google.cloud.storage import Client as StorageClient
 from google.cloud.storage.retry import DEFAULT_RETRY as GCS_DEFAULT_RETRY
 from google.oauth2.credentials import Credentials as GoogleCredentials
+from dbt_common.invocation import get_invocation_id
 
 from dbt.adapters.events.logging import AdapterLogger
 
@@ -64,7 +65,9 @@ def _create_bigquery_client(credentials: BigQueryCredentials) -> BigQueryClient:
         credentials.execution_project,
         create_google_credentials(credentials),
         location=getattr(credentials, "location", None),
-        client_info=ClientInfo(user_agent=f"dbt-bigquery-{dbt_version.version}"),
+        client_info=ClientInfo(
+            user_agent=f"dbt-bigquery-{dbt_version.version} dbt-invocation-id/{get_invocation_id()}"
+        ),
         client_options=ClientOptions(
             quota_project_id=credentials.quota_project, api_endpoint=credentials.api_endpoint
         ),
diff --git a/dbt-bigquery/tests/unit/test_bigquery_adapter.py b/dbt-bigquery/tests/unit/test_bigquery_adapter.py
index 5edcb9416..fb89633e8 100644
--- a/dbt-bigquery/tests/unit/test_bigquery_adapter.py
+++ b/dbt-bigquery/tests/unit/test_bigquery_adapter.py
@@ -24,6 +24,7 @@
 from dbt.contracts.files import FileHash
 from dbt.contracts.graph.manifest import ManifestStateCheck
 from dbt.context.providers import RuntimeConfigObject, generate_runtime_macro_context
+from dbt_common.invocation import get_invocation_id
 
 from google.cloud.bigquery import AccessEntry
 
@@ -471,7 +472,9 @@ def test_api_endpoint_settable(self, MockClient, mock_auth_default, MockClientOp
 
 
 class HasUserAgent:
-    PAT = re.compile(r"dbt-bigquery-\d+\.\d+\.\d+((a|b|rc)\d+)?")
+    PAT = re.compile(
+        r"dbt-bigquery-\d+\.\d+\.\d+((a|b|rc)\d+)? dbt-invocation-id/" + get_invocation_id()
+    )
 
     def __eq__(self, other):
         compare = getattr(other, "user_agent", "")