diff --git a/src/prototype/lang/object.js b/src/prototype/lang/object.js
index 675530a74..aad230945 100644
--- a/src/prototype/lang/object.js
+++ b/src/prototype/lang/object.js
@@ -29,6 +29,7 @@
       NUMBER_TYPE = 'Number',
       STRING_TYPE = 'String',
       OBJECT_TYPE = 'Object',
+      OBJECT_CLASS = '[object Object]';
       FUNCTION_CLASS = '[object Function]',
       BOOLEAN_CLASS = '[object Boolean]',
       NUMBER_CLASS = '[object Number]',
@@ -486,6 +487,24 @@
     return object instanceof Hash;
   }
 
+  /**
+   *  Object.isObject(object) -> Boolean
+   *  - object (Object): The object to test.
+   *
+   *  Returns `true` if `object` is of type [[Object]]; `false` otherwise.
+   *  
+   *  ##### Examples
+   *  
+   *      Object.isObject({});
+   *      //-> true
+   *      
+   *      Object.isObject('str');
+   *      //-> false
+  **/
+  function isObject(object) {
+    return _toString.call(object) === OBJECT_CLASS;
+  }
+
   /**
    *  Object.isFunction(object) -> Boolean
    *  - object (Object): The object to test.
@@ -603,6 +622,7 @@
     keys:          Object.keys || keys,
     values:        values,
     clone:         clone,
+    isObject:      isObject,
     isElement:     isElement,
     isArray:       isArray,
     isHash:        isHash,
diff --git a/test/unit/tests/object.test.js b/test/unit/tests/object.test.js
index a32c53b9d..555e428dd 100644
--- a/test/unit/tests/object.test.js
+++ b/test/unit/tests/object.test.js
@@ -143,6 +143,19 @@ suite('Object', function () {
     assert.strictEqual(false, Object.isElement(undefined));
   });
 
+  test('.isObject', function () {
+    assert(Object.isObject({}));
+    assert(Object.isObject(new Object()));
+
+    assert(!Object.isObject("a string"));
+    assert(!Object.isObject($(document.createElement('div'))));
+    assert(!Object.isObject([]));
+    assert(!Object.isObject(0));
+    assert(!Object.isObject(false));
+    assert(!Object.isObject(undefined));
+    assert(!Object.isObject(/xyz/));
+  });
+
   test('.isFunction', function () {
     assert(Object.isFunction(function() { }));
     assert(Object.isFunction(Class.create()));