diff --git a/rest_framework/authentication.py b/rest_framework/authentication.py
index da9ca510e..d8a962dc9 100644
--- a/rest_framework/authentication.py
+++ b/rest_framework/authentication.py
@@ -10,7 +10,11 @@ from django.conf import settings
 from rest_framework import exceptions, HTTP_HEADER_ENCODING
 from rest_framework.compat import CsrfViewMiddleware
 from rest_framework.compat import oauth, oauth_provider, oauth_provider_store
-from rest_framework.compat import oauth2_provider, provider_now, check_nonce
+from rest_framework.compat import (oauth2_provider,
+                                   provider_now,
+                                   check_nonce,
+                                   oauth2_constants,
+                                   )
 from rest_framework.authtoken.models import Token
 
 
@@ -293,6 +297,7 @@ class OAuth2Authentication(BaseAuthentication):
     """
     www_authenticate_realm = 'api'
     allow_query_params_token = settings.DEBUG
+    token_type = getattr(oauth2_constants, 'TOKEN_TYPE', b'Bearer')
 
     def __init__(self, *args, **kwargs):
         super(OAuth2Authentication, self).__init__(*args, **kwargs)
@@ -310,7 +315,7 @@ class OAuth2Authentication(BaseAuthentication):
 
         auth = get_authorization_header(request).split()
 
-        if auth and auth[0].lower() == b'bearer':
+        if auth and auth[0].lower() == self.token_type.lower():
             access_token = auth[1]
         elif 'access_token' in request.POST:
             access_token = request.POST['access_token']
@@ -355,4 +360,4 @@ class OAuth2Authentication(BaseAuthentication):
 
         Check details on the `OAuth2Authentication.authenticate` method
         """
-        return 'Bearer realm="%s"' % self.www_authenticate_realm
+        return '%s realm="%s"' % (self.token_type, self.www_authenticate_realm)
diff --git a/rest_framework/tests/test_authentication.py b/rest_framework/tests/test_authentication.py
index a1c43d9ce..e0711d844 100644
--- a/rest_framework/tests/test_authentication.py
+++ b/rest_framework/tests/test_authentication.py
@@ -57,10 +57,16 @@ urlpatterns = patterns('',
 class OAuth2AuthenticationDebug(OAuth2Authentication):
     allow_query_params_token = True
 
+
+class OAuth2AuthenticationCustomTokenType(OAuth2Authentication):
+    token_type = 'Custom'
+
+
 if oauth2_provider is not None:
     urlpatterns += patterns('',
         url(r'^oauth2/', include('provider.oauth2.urls', namespace='oauth2')),
         url(r'^oauth2-test/$', MockView.as_view(authentication_classes=[OAuth2Authentication])),
+        url(r'^oauth2-test-token-type/$', MockView.as_view(authentication_classes=[OAuth2AuthenticationCustomTokenType])),
         url(r'^oauth2-test-debug/$', MockView.as_view(authentication_classes=[OAuth2AuthenticationDebug])),
         url(r'^oauth2-with-scope-test/$', MockView.as_view(authentication_classes=[OAuth2Authentication],
             permission_classes=[permissions.TokenHasReadWriteScope])),
@@ -556,6 +562,14 @@ class OAuth2Tests(TestCase):
         response = self.csrf_client.get('/oauth2-test/', HTTP_AUTHORIZATION=auth)
         self.assertEqual(response.status_code, 200)
 
+    @unittest.skipUnless(oauth2_provider, 'django-oauth2-provider not installed')
+    def test_get_form_passing_authi_with_custom_token_type(self):
+        """Ensure GETing form over OAuth with correct client credentials
+        and custom TOKEN_TYPE succeed"""
+        auth = "Custom {0}".format(self.access_token.token)
+        response = self.csrf_client.get('/oauth2-test-token-type/', HTTP_AUTHORIZATION=auth)
+        self.assertEqual(response.status_code, 200)
+
     @unittest.skipUnless(oauth2_provider, 'django-oauth2-provider not installed')
     def test_post_form_passing_auth_url_transport(self):
         """Ensure GETing form over OAuth with correct client credentials in form data succeed"""