diff --git a/accessible/aom/moz.build b/accessible/aom/moz.build
index 88b941435ee8..1b1bbc4290cc 100644
--- a/accessible/aom/moz.build
+++ b/accessible/aom/moz.build
@@ -34,6 +34,10 @@ elif CONFIG["MOZ_WIDGET_TOOLKIT"] == "android":
     LOCAL_INCLUDES += [
         "/accessible/android",
     ]
+elif CONFIG["MOZ_WIDGET_TOOLKIT"] == "uikit":
+    LOCAL_INCLUDES += [
+        "/accessible/ios",
+    ]
 else:
     LOCAL_INCLUDES += [
         "/accessible/other",
diff --git a/accessible/base/Platform.h b/accessible/base/Platform.h
index 23f214246f2d..68529d176a1d 100644
--- a/accessible/base/Platform.h
+++ b/accessible/base/Platform.h
@@ -47,10 +47,10 @@ EPlatformDisabledState PlatformDisabledState();
 void PreInit();
 #endif
 
-#if defined(MOZ_ACCESSIBILITY_ATK) || defined(XP_MACOSX)
+#if defined(MOZ_ACCESSIBILITY_ATK) || defined(XP_DARWIN)
 /**
  * Is platform accessibility enabled.
- * Only used on linux with atk and MacOS for now.
+ * Only used on Linux, MacOS and iOS for now.
  */
 bool ShouldA11yBeEnabled();
 #endif
diff --git a/accessible/base/moz.build b/accessible/base/moz.build
index b65c90ceba91..de8e75f0e1a7 100644
--- a/accessible/base/moz.build
+++ b/accessible/base/moz.build
@@ -112,6 +112,10 @@ elif CONFIG["MOZ_WIDGET_TOOLKIT"] == "android":
     LOCAL_INCLUDES += [
         "/accessible/android",
     ]
+elif CONFIG["MOZ_WIDGET_TOOLKIT"] == "uikit":
+    LOCAL_INCLUDES += [
+        "/accessible/ios",
+    ]
 else:
     LOCAL_INCLUDES += [
         "/accessible/other",
diff --git a/accessible/generic/moz.build b/accessible/generic/moz.build
index 06e229b99999..6d34fe7d6887 100644
--- a/accessible/generic/moz.build
+++ b/accessible/generic/moz.build
@@ -53,6 +53,10 @@ elif CONFIG["MOZ_WIDGET_TOOLKIT"] == "android":
     LOCAL_INCLUDES += [
         "/accessible/android",
     ]
+elif CONFIG["MOZ_WIDGET_TOOLKIT"] == "uikit":
+    LOCAL_INCLUDES += [
+        "/accessible/ios",
+    ]
 else:
     LOCAL_INCLUDES += [
         "/accessible/other",
diff --git a/accessible/html/moz.build b/accessible/html/moz.build
index 3a246373da0a..73b7737987d4 100644
--- a/accessible/html/moz.build
+++ b/accessible/html/moz.build
@@ -42,6 +42,10 @@ elif CONFIG["MOZ_WIDGET_TOOLKIT"] == "android":
     LOCAL_INCLUDES += [
         "/accessible/android",
     ]
+elif CONFIG["MOZ_WIDGET_TOOLKIT"] == "uikit":
+    LOCAL_INCLUDES += [
+        "/accessible/ios",
+    ]
 else:
     LOCAL_INCLUDES += [
         "/accessible/other",
diff --git a/accessible/ios/.clang-format b/accessible/ios/.clang-format
new file mode 100644
index 000000000000..269bce4d0fa2
--- /dev/null
+++ b/accessible/ios/.clang-format
@@ -0,0 +1,11 @@
+---
+# Objective C formatting rules.
+# Since this doesn't derive from the Cpp section, we need to redifine the root rules here.
+Language: ObjC
+BasedOnStyle: Google
+
+DerivePointerAlignment: false
+PointerAlignment: Left
+SortIncludes: false
+ColumnLimit: 80
+IndentPPDirectives: AfterHash
diff --git a/accessible/ios/AccessibleWrap.h b/accessible/ios/AccessibleWrap.h
new file mode 100644
index 000000000000..40da51c80a86
--- /dev/null
+++ b/accessible/ios/AccessibleWrap.h
@@ -0,0 +1,30 @@
+/* clang-format off */
+/* -*- Mode: Objective-C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* clang-format on */
+/* 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/. */
+
+/* For documentation of the accessibility architecture,
+ * see https://firefox-source-docs.mozilla.org/accessible/index.html
+ */
+
+#ifndef mozilla_a11y_AccessibleWrap_h_
+#define mozilla_a11y_AccessibleWrap_h_
+
+#include "nsCOMPtr.h"
+#include "LocalAccessible.h"
+
+namespace mozilla {
+namespace a11y {
+
+class AccessibleWrap : public LocalAccessible {
+ public:  // construction, destruction
+  AccessibleWrap(nsIContent* aContent, DocAccessible* aDoc);
+  virtual ~AccessibleWrap() = default;
+};
+
+}  // namespace a11y
+}  // namespace mozilla
+
+#endif
diff --git a/accessible/ios/AccessibleWrap.mm b/accessible/ios/AccessibleWrap.mm
new file mode 100644
index 000000000000..40a09a9f78c3
--- /dev/null
+++ b/accessible/ios/AccessibleWrap.mm
@@ -0,0 +1,15 @@
+/* -*- 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 "AccessibleWrap.h"
+
+using namespace mozilla::a11y;
+
+//-----------------------------------------------------
+// construction
+//-----------------------------------------------------
+AccessibleWrap::AccessibleWrap(nsIContent* aContent, DocAccessible* aDoc)
+    : LocalAccessible(aContent, aDoc) {}
+
diff --git a/accessible/ios/ApplicationAccessibleWrap.h b/accessible/ios/ApplicationAccessibleWrap.h
new file mode 100644
index 000000000000..fd5ced8eb22a
--- /dev/null
+++ b/accessible/ios/ApplicationAccessibleWrap.h
@@ -0,0 +1,20 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:expandtab:shiftwidth=4:tabstop=4:
+ */
+/* 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 mozilla_a11y_ApplicationAccessibleWrap_h__
+#define mozilla_a11y_ApplicationAccessibleWrap_h__
+
+#include "ApplicationAccessible.h"
+
+namespace mozilla {
+namespace a11y {
+
+using ApplicationAccessibleWrap = ApplicationAccessible;
+}  // namespace a11y
+}  // namespace mozilla
+
+#endif
diff --git a/accessible/ios/DocAccessibleWrap.h b/accessible/ios/DocAccessibleWrap.h
new file mode 100644
index 000000000000..e14dfd43943b
--- /dev/null
+++ b/accessible/ios/DocAccessibleWrap.h
@@ -0,0 +1,23 @@
+/* -*- 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/. */
+
+/* For documentation of the accessibility architecture,
+ * see https://firefox-source-docs.mozilla.org/accessible/index.html
+ */
+
+#ifndef mozilla_a11y_DocAccessibleWrap_h__
+#define mozilla_a11y_DocAccessibleWrap_h__
+
+#include "DocAccessible.h"
+
+namespace mozilla {
+namespace a11y {
+
+typedef DocAccessible DocAccessibleWrap;
+
+}  // namespace a11y
+}  // namespace mozilla
+
+#endif
diff --git a/accessible/ios/Platform.mm b/accessible/ios/Platform.mm
new file mode 100644
index 000000000000..8f594ace9cd2
--- /dev/null
+++ b/accessible/ios/Platform.mm
@@ -0,0 +1,47 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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 "Platform.h"
+#include "RemoteAccessible.h"
+#include "DocAccessibleParent.h"
+
+namespace mozilla {
+namespace a11y {
+
+bool ShouldA11yBeEnabled() {
+  // XXX: Figure out proper a11y activation strategies in iOS.
+  return true;
+}
+
+void PlatformInit() {}
+
+void PlatformShutdown() {}
+
+void ProxyCreated(RemoteAccessible* aProxy) {}
+
+void ProxyDestroyed(RemoteAccessible* aProxy) {}
+
+void PlatformEvent(Accessible*, uint32_t) {}
+
+void PlatformStateChangeEvent(Accessible*, uint64_t, bool) {}
+
+void PlatformFocusEvent(Accessible* aTarget,
+                        const LayoutDeviceIntRect& aCaretRect) {}
+
+void PlatformCaretMoveEvent(Accessible* aTarget, int32_t aOffset,
+                            bool aIsSelectionCollapsed, int32_t aGranularity,
+                            const LayoutDeviceIntRect& aCaretRect,
+                            bool aFromUser) {}
+
+void PlatformTextChangeEvent(Accessible*, const nsAString&, int32_t, uint32_t,
+                             bool, bool) {}
+
+void PlatformShowHideEvent(Accessible*, Accessible*, bool, bool) {}
+
+void PlatformSelectionEvent(Accessible*, Accessible*, uint32_t) {}
+
+}  // namespace a11y
+}  // namespace mozilla
diff --git a/accessible/ios/RootAccessibleWrap.h b/accessible/ios/RootAccessibleWrap.h
new file mode 100644
index 000000000000..00d62af8ec3e
--- /dev/null
+++ b/accessible/ios/RootAccessibleWrap.h
@@ -0,0 +1,23 @@
+/* -*- 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/. */
+
+/* For documentation of the accessibility architecture,
+ * see https://firefox-source-docs.mozilla.org/accessible/index.html
+ */
+
+#ifndef mozilla_a11y_RootAccessibleWrap_h__
+#define mozilla_a11y_RootAccessibleWrap_h__
+
+#include "RootAccessible.h"
+
+namespace mozilla {
+namespace a11y {
+
+typedef RootAccessible RootAccessibleWrap;
+
+}  // namespace a11y
+}  // namespace mozilla
+
+#endif
diff --git a/accessible/ios/moz.build b/accessible/ios/moz.build
new file mode 100644
index 000000000000..cc72da0f7316
--- /dev/null
+++ b/accessible/ios/moz.build
@@ -0,0 +1,26 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# 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/.
+
+EXPORTS.mozilla.a11y += [
+    "AccessibleWrap.h",
+]
+
+SOURCES += [
+    "AccessibleWrap.mm",
+    "Platform.mm",
+]
+
+LOCAL_INCLUDES += [
+    "/accessible/base",
+    "/accessible/generic",
+    "/accessible/html",
+    "/accessible/ipc",
+    "/accessible/xul",
+]
+
+FINAL_LIBRARY = "xul"
+
+include("/ipc/chromium/chromium-config.mozbuild")
diff --git a/accessible/ipc/moz.build b/accessible/ipc/moz.build
index b8ff3b9c4f9d..462018fb935a 100644
--- a/accessible/ipc/moz.build
+++ b/accessible/ipc/moz.build
@@ -18,6 +18,10 @@ else:
         LOCAL_INCLUDES += [
             "/accessible/mac",
         ]
+    elif CONFIG["MOZ_WIDGET_TOOLKIT"] == "uikit":
+        LOCAL_INCLUDES += [
+            "/accessible/ios",
+        ]
     else:
         LOCAL_INCLUDES += [
             "/accessible/other",
diff --git a/accessible/moz.build b/accessible/moz.build
index ed05b5b50ed3..000230672afe 100644
--- a/accessible/moz.build
+++ b/accessible/moz.build
@@ -14,6 +14,8 @@ elif toolkit == "cocoa":
     DIRS += ["mac"]
 elif toolkit == "android":
     DIRS += ["android"]
+elif toolkit == "uikit":
+    DIRS += ["ios"]
 else:
     DIRS += ["other"]
 
diff --git a/accessible/xpcom/moz.build b/accessible/xpcom/moz.build
index 2ce13081a2b0..65cfbfdc0b1d 100644
--- a/accessible/xpcom/moz.build
+++ b/accessible/xpcom/moz.build
@@ -59,6 +59,10 @@ elif CONFIG["MOZ_WIDGET_TOOLKIT"] == "android":
     LOCAL_INCLUDES += [
         "/accessible/android",
     ]
+elif CONFIG["MOZ_WIDGET_TOOLKIT"] == "uikit":
+    LOCAL_INCLUDES += [
+        "/accessible/ios",
+    ]
 else:
     LOCAL_INCLUDES += [
         "/accessible/other",
diff --git a/accessible/xul/moz.build b/accessible/xul/moz.build
index 4fccfff6e015..88fc3ffa29b8 100644
--- a/accessible/xul/moz.build
+++ b/accessible/xul/moz.build
@@ -46,6 +46,10 @@ elif CONFIG["MOZ_WIDGET_TOOLKIT"] == "android":
     LOCAL_INCLUDES += [
         "/accessible/android",
     ]
+elif CONFIG["MOZ_WIDGET_TOOLKIT"] == "uikit":
+    LOCAL_INCLUDES += [
+        "/accessible/ios",
+    ]
 else:
     LOCAL_INCLUDES += [
         "/accessible/other",