diff --git a/packages/datastore/src/transaction.js b/packages/datastore/src/transaction.js
index 1cdbdbd9f73..1de68bc6051 100644
--- a/packages/datastore/src/transaction.js
+++ b/packages/datastore/src/transaction.js
@@ -55,6 +55,7 @@ function Transaction(datastore) {
   this.datastore = datastore;
 
   this.projectId = datastore.projectId;
+  this.namespace = datastore.namespace;
 
   this.request = datastore.request.bind(datastore);
 
diff --git a/packages/datastore/test/transaction.js b/packages/datastore/test/transaction.js
index 8f413eb002d..263d54132f7 100644
--- a/packages/datastore/test/transaction.js
+++ b/packages/datastore/test/transaction.js
@@ -63,10 +63,12 @@ describe('Transaction', function() {
   var transaction;
   var TRANSACTION_ID = 'transaction-id';
   var PROJECT_ID = 'project-id';
+  var NAMESPACE = 'a-namespace';
 
   var DATASTORE = {
     request: function() {},
-    projectId: PROJECT_ID
+    projectId: PROJECT_ID,
+    namespace: NAMESPACE
   };
 
   function key(path) {
@@ -99,6 +101,10 @@ describe('Transaction', function() {
       assert.strictEqual(transaction.projectId, PROJECT_ID);
     });
 
+    it('should localize the namespace', function() {
+      assert.strictEqual(transaction.namespace, NAMESPACE);
+    });
+
     it('should localize request function', function(done) {
       var transaction;