diff --git a/django/http/__init__.py b/django/http/__init__.py
index eb28168260..ed2c128a16 100644
--- a/django/http/__init__.py
+++ b/django/http/__init__.py
@@ -272,6 +272,9 @@ class HttpResponsePermanentRedirect(HttpResponse):
 class HttpResponseNotModified(HttpResponse):
     status_code = 304
 
+class HttpResponseBadRequest(HttpResponse):
+    status_code = 400
+
 class HttpResponseNotFound(HttpResponse):
     status_code = 404