diff --git a/toolkit/xre/UIKitDirProvider.h b/toolkit/xre/UIKitDirProvider.h
new file mode 100644
index 000000000000..c74596125ce4
--- /dev/null
+++ b/toolkit/xre/UIKitDirProvider.h
@@ -0,0 +1,13 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef TOOLKIT_XRE_UIKITDIRPROVIDER_H_
+#define TOOLKIT_XRE_UIKITDIRPROVIDER_H_
+
+#include "nsString.h"
+
+bool GetUIKitDirectory(bool aLocal, nsACString& aUserDir);
+
+#endif // TOOLKIT_XRE_UIKITDIRPROVIDER_H_
diff --git a/toolkit/xre/UIKitDirProvider.mm b/toolkit/xre/UIKitDirProvider.mm
new file mode 100644
index 000000000000..b5bd03c6e6f1
--- /dev/null
+++ b/toolkit/xre/UIKitDirProvider.mm
@@ -0,0 +1,19 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <Foundation/Foundation.h>
+
+#include "UIKitDirProvider.h"
+
+bool GetUIKitDirectory(bool aLocal, nsACString& aUserDir)
+{
+  NSSearchPathDirectory directory = aLocal ? NSCachesDirectory : NSApplicationSupportDirectory;
+  NSArray* paths = NSSearchPathForDirectoriesInDomains(directory, NSUserDomainMask, YES);
+  if ([paths count] == 0) {
+    return false;
+  }
+  aUserDir = [[paths objectAtIndex:0] UTF8String];
+  return true;
+}
diff --git a/toolkit/xre/moz.build b/toolkit/xre/moz.build
index 4b89fe46bfcf..2190ffb37be1 100644
--- a/toolkit/xre/moz.build
+++ b/toolkit/xre/moz.build
@@ -40,6 +40,11 @@ elif CONFIG['MOZ_WIDGET_TOOLKIT'] == 'cocoa':
         'MacLaunchHelper.mm',
         'nsNativeAppSupportCocoa.mm',
     ]
+elif CONFIG['MOZ_WIDGET_TOOLKIT'] == 'uikit':
+    UNIFIED_SOURCES += [
+        'nsNativeAppSupportDefault.cpp',
+        'UIKitDirProvider.mm',
+    ]
 elif CONFIG['MOZ_WIDGET_TOOLKIT'] == 'qt':
     EXPORTS += ['nsQAppInstance.h']
     SOURCES += [
diff --git a/toolkit/xre/nsXREDirProvider.cpp b/toolkit/xre/nsXREDirProvider.cpp
index 705d8915b84a..d60d5d3b46bb 100644
--- a/toolkit/xre/nsXREDirProvider.cpp
+++ b/toolkit/xre/nsXREDirProvider.cpp
@@ -52,6 +52,9 @@
 #ifdef XP_UNIX
 #include <ctype.h>
 #endif
+#ifdef XP_IOS
+#include "UIKitDirProvider.h"
+#endif
 
 #if defined(XP_MACOSX)
 #define APP_REGISTRY_NAME "Application Registry"
@@ -1235,6 +1238,14 @@ nsXREDirProvider::GetUserDataDirectoryHome(nsIFile** aFile, bool aLocal)
   NS_ENSURE_SUCCESS(rv, rv);
 
   localDir = do_QueryInterface(dirFileMac, &rv);
+#elif defined(XP_IOS)
+  nsAutoCString userDir;
+  if (GetUIKitDirectory(aLocal, userDir)) {
+    rv = NS_NewNativeLocalFile(userDir, true, getter_AddRefs(localDir));
+  } else {
+    rv = NS_ERROR_FAILURE;
+  }
+  NS_ENSURE_SUCCESS(rv, rv);
 #elif defined(XP_WIN)
   nsString path;
   if (aLocal) {