diff --git a/packages/@aws-cdk/aws-ecs/lib/log-drivers/splunk-log-driver.ts b/packages/@aws-cdk/aws-ecs/lib/log-drivers/splunk-log-driver.ts
index ecb4d9f0dd9c1..b536db6003ec3 100644
--- a/packages/@aws-cdk/aws-ecs/lib/log-drivers/splunk-log-driver.ts
+++ b/packages/@aws-cdk/aws-ecs/lib/log-drivers/splunk-log-driver.ts
@@ -145,6 +145,7 @@ export class SplunkLogDriver extends LogDriver {
         'splunk-verify-connection': this.props.verifyConnection,
         'splunk-gzip': this.props.gzip,
         'splunk-gzip-level': this.props.gzipLevel,
+        'splunk-tag': this.props.tag,
         ...renderCommonLogDriverOptions(this.props),
       }),
     };
diff --git a/packages/@aws-cdk/aws-ecs/test/splunk-log-driver.test.ts b/packages/@aws-cdk/aws-ecs/test/splunk-log-driver.test.ts
index c8afd01daade1..fb1091a3ae027 100644
--- a/packages/@aws-cdk/aws-ecs/test/splunk-log-driver.test.ts
+++ b/packages/@aws-cdk/aws-ecs/test/splunk-log-driver.test.ts
@@ -103,4 +103,35 @@ nodeunitShim({
 
     test.done();
   },
+
+  'create a splunk log driver using splunk-tag property when tag is defined'(test: Test) {
+    // WHEN
+    td.addContainer('Container', {
+      image,
+      logging: ecs.LogDrivers.splunk({
+        token: cdk.SecretValue.secretsManager('my-splunk-token'),
+        url: 'my-splunk-url',
+        tag: 'abc',
+      }),
+      memoryLimitMiB: 128,
+    });
+
+    // THEN
+    expect(stack).to(haveResourceLike('AWS::ECS::TaskDefinition', {
+      ContainerDefinitions: [
+        {
+          LogConfiguration: {
+            LogDriver: 'splunk',
+            Options: {
+              'splunk-token': '{{resolve:secretsmanager:my-splunk-token:SecretString:::}}',
+              'splunk-url': 'my-splunk-url',
+              'splunk-tag': 'abc',
+            },
+          },
+        },
+      ],
+    }));
+
+    test.done();
+  },
 });