diff --git a/client/client.go b/client/client.go
index 52fd1cd88..8d02607ef 100644
--- a/client/client.go
+++ b/client/client.go
@@ -1261,6 +1261,9 @@ type (
 		// underlying connection. Only the final close of all existing clients will
 		// close the underlying connection.
 		Close()
+
+		// Namespace returns the configured namespace of the Temporal client
+		Namespace() string
 	}
 
 	// NamespaceClient is the client for managing operations on the namespace.
diff --git a/internal/client.go b/internal/client.go
index 405de582a..c89048876 100644
--- a/internal/client.go
+++ b/internal/client.go
@@ -452,6 +452,9 @@ type (
 
 		// Close client and clean up underlying resources.
 		Close()
+
+		// Namespace returns the configured namespace of the Temporal client
+		Namespace() string
 	}
 
 	// ClientOptions are optional parameters for Client creation.
diff --git a/internal/internal_workflow_client.go b/internal/internal_workflow_client.go
index 8d0a7bf81..3fce10fae 100644
--- a/internal/internal_workflow_client.go
+++ b/internal/internal_workflow_client.go
@@ -1365,6 +1365,11 @@ func (wc *WorkflowClient) Close() {
 	}
 }
 
+// Namespace returns the configured namespace of the Temporal client
+func (wc *WorkflowClient) Namespace() string {
+	return wc.namespace
+}
+
 // Register a namespace with temporal server
 // The errors it can throw:
 //   - NamespaceAlreadyExistsError
diff --git a/internal/internal_workflow_client_test.go b/internal/internal_workflow_client_test.go
index 8accdd298..ce8b0d71e 100644
--- a/internal/internal_workflow_client_test.go
+++ b/internal/internal_workflow_client_test.go
@@ -2478,3 +2478,11 @@ func TestUpdate(t *testing.T) {
 		require.NoError(t, err)
 	})
 }
+
+func (s *workflowClientTestSuite) TestNamespace() {
+	dc := NewContextAwareDataConverter(converter.GetDefaultDataConverter())
+	s.client = NewServiceClient(s.service, nil, ClientOptions{DataConverter: dc})
+	client, ok := s.client.(*WorkflowClient)
+	s.Require().True(ok)
+	s.Equal(DefaultNamespace, client.Namespace())
+}
diff --git a/internal/nexus_operations.go b/internal/nexus_operations.go
index 8a3a38639..af35ade10 100644
--- a/internal/nexus_operations.go
+++ b/internal/nexus_operations.go
@@ -698,6 +698,11 @@ func (t *testSuiteClientForNexusOperations) UpdateWorkflowExecutionOptions(ctx c
 	panic("not implemented in the test environment")
 }
 
+// Namespace returns the default testing namespace, ie. "default-test-namespace"
+func (t *testSuiteClientForNexusOperations) Namespace() string {
+	return t.env.workflowInfo.Namespace
+}
+
 var _ Client = &testSuiteClientForNexusOperations{}
 
 // testEnvWorkflowRunForNexusOperations is a partial [WorkflowRun] implementation for the test workflow environment used
diff --git a/mocks/Client.go b/mocks/Client.go
index f7830bc9a..7d5e56e82 100644
--- a/mocks/Client.go
+++ b/mocks/Client.go
@@ -1112,6 +1112,26 @@ func (_m *Client) WorkflowService() workflowservice.WorkflowServiceClient {
 	return r0
 }
 
+// Namespace provides a mock function with given fields:
+func (_m *Client) Namespace() string {
+	ret := _m.Called()
+
+	if len(ret) == 0 {
+		panic("no return value specified for Namespace")
+	}
+
+	var r0 string
+	if rf, ok := ret.Get(0).(func() string); ok {
+		r0 = rf()
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(string)
+		}
+	}
+
+	return r0
+}
+
 // NewClient creates a new instance of Client. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
 // The first argument is typically a *testing.T value.
 func NewClient(t interface {