diff --git a/chart/templates/pgbouncer/pgbouncer-deployment.yaml b/chart/templates/pgbouncer/pgbouncer-deployment.yaml
index 45c4a7148778c..96f523a6d9ebf 100644
--- a/chart/templates/pgbouncer/pgbouncer-deployment.yaml
+++ b/chart/templates/pgbouncer/pgbouncer-deployment.yaml
@@ -87,6 +87,7 @@ spec:
       {{- end }}
       tolerations: {{- toYaml $tolerations | nindent 8 }}
       topologySpreadConstraints: {{- toYaml $topologySpreadConstraints | nindent 8 }}
+      terminationGracePeriodSeconds: {{ .Values.pgbouncer.terminationGracePeriodSeconds }}
       serviceAccountName: {{ include "pgbouncer.serviceAccountName" . }}
       {{- include "serviceLinks" . | nindent 6 }}
       securityContext: {{ $securityContext | nindent 8 }}
diff --git a/chart/values.schema.json b/chart/values.schema.json
index 092e5abc2d1ce..f04ef036c5818 100644
--- a/chart/values.schema.json
+++ b/chart/values.schema.json
@@ -10061,6 +10061,13 @@
                         }
                     ]
                 },
+                "terminationGracePeriodSeconds": {
+                    "description": "Grace period for PgBouncer to finish after SIGTERM is sent from Kubernetes.",
+                    "type": "integer",
+                    "default": 120,
+                    "minimum": 0,
+                    "x-docsSection": "Kubernetes"
+                },
                 "securityContexts": {
                     "description": "Security context definition for the PgBouncer.",
                     "type": "object",
diff --git a/chart/values.yaml b/chart/values.yaml
index 274a8d79b4a86..5fcac27903e09 100644
--- a/chart/values.yaml
+++ b/chart/values.yaml
@@ -3916,6 +3916,12 @@ pgbouncer:
         # Allow existing queries clients to complete within 120 seconds
         command: ["/bin/sh", "-c", "killall -INT pgbouncer && sleep 120"]
 
+  # Grace period for PgBouncer to finish after SIGTERM is sent from Kubernetes.
+  # Matches the default preStop hook above, which needs up to 120 seconds to
+  # drain client connections; with a shorter grace period the pod is killed
+  # mid-drain and in-flight connections are cut.
+  terminationGracePeriodSeconds: 120
+
   metricsExporterSidecar:
     resources: {}
     # limits:
diff --git a/helm-tests/tests/helm_tests/other/test_pgbouncer.py b/helm-tests/tests/helm_tests/other/test_pgbouncer.py
index 27e0f60378aac..8bde2b419e8b7 100644
--- a/helm-tests/tests/helm_tests/other/test_pgbouncer.py
+++ b/helm-tests/tests/helm_tests/other/test_pgbouncer.py
@@ -431,6 +431,20 @@ def test_should_add_component_specific_labels(self):
         assert "labels" in jmespath.search("spec.template.metadata", docs[0])
         assert jmespath.search("spec.template.metadata.labels", docs[0])["test_label"] == "test_label_value"
 
+    @pytest.mark.parametrize(
+        ("pgbouncer_values", "expected"),
+        [
+            ({"enabled": True}, 120),
+            ({"enabled": True, "terminationGracePeriodSeconds": 30}, 30),
+        ],
+    )
+    def test_pgbouncer_termination_grace_period_seconds(self, pgbouncer_values, expected):
+        docs = render_chart(
+            values={"pgbouncer": pgbouncer_values},
+            show_only=["templates/pgbouncer/pgbouncer-deployment.yaml"],
+        )
+        assert expected == jmespath.search("spec.template.spec.terminationGracePeriodSeconds", docs[0])
+
 
 class TestPgbouncerConfig:
     """Tests PgBouncer config."""