diff --git a/Libraries/ReactNative/UIManager.js b/Libraries/ReactNative/UIManager.js
index c93563011..ddc06f343 100644
--- a/Libraries/ReactNative/UIManager.js
+++ b/Libraries/ReactNative/UIManager.js
@@ -11,11 +11,13 @@
 
 const NativeModules = require('NativeModules');
 const Platform = require('Platform');
+const UIManagerProperties = require('UIManagerProperties');
 
 const defineLazyObjectProperty = require('defineLazyObjectProperty');
 const invariant = require('fbjs/lib/invariant');
 
 const {UIManager} = NativeModules;
+const viewManagerConfigs = {};
 
 invariant(
   UIManager,
@@ -36,7 +38,20 @@ UIManager.takeSnapshot = function() {
   );
 };
 UIManager.getViewManagerConfig = function(viewManagerName: string) {
-  return UIManager[viewManagerName];
+  if (
+    viewManagerConfigs[viewManagerName] === undefined &&
+    UIManager.getConstantsForViewManager
+  ) {
+    try {
+      viewManagerConfigs[
+        viewManagerName
+      ] = UIManager.getConstantsForViewManager(viewManagerName);
+    } catch (e) {
+      viewManagerConfigs[viewManagerName] = null;
+    }
+  }
+
+  return viewManagerConfigs[viewManagerName];
 };
 
 /**
@@ -48,6 +63,7 @@ if (Platform.OS === 'ios') {
   Object.keys(UIManager).forEach(viewName => {
     const viewConfig = UIManager[viewName];
     if (viewConfig.Manager) {
+      viewManagerConfigs[viewName] = viewConfig;
       defineLazyObjectProperty(viewConfig, 'Constants', {
         get: () => {
           const viewManager = NativeModules[viewConfig.Manager];
@@ -107,4 +123,20 @@ if (Platform.OS === 'ios') {
   if (global.__makePartial) global.__makePartial(UIManager);
 }
 
+if (__DEV__) {
+  Object.keys(UIManager).forEach(viewManagerName => {
+    if (!UIManagerProperties.includes(viewManagerName)) {
+      defineLazyObjectProperty(UIManager, viewManagerName, {
+        get: () => {
+          console.warn(
+            `Accessing view manager configs directly off UIManager via UIManager['${viewManagerName}'] ` +
+              `is no longer supported. Use UIManager.getViewManager('${viewManagerName}') instead.`,
+          );
+          return UIManager.getViewManagerConfig(viewManagerName);
+        },
+      });
+    }
+  });
+}
+
 module.exports = UIManager;
diff --git a/Libraries/ReactNative/UIManagerProperties.js b/Libraries/ReactNative/UIManagerProperties.js
new file mode 100644
index 000000000..a579b6047
--- /dev/null
+++ b/Libraries/ReactNative/UIManagerProperties.js
@@ -0,0 +1,67 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+'use strict';
+
+/**
+ * The list of non-ViewManager related UIManager properties.
+ *
+ * In an effort to improve startup performance by lazily loading view managers,
+ * the interface to access view managers will change from
+ * UIManager['viewManagerName'] to UIManager.getViewManager('viewManagerName').
+ * By using a function call instead of a property access, the UIManager will
+ * be able to initialize and load the required view manager from native
+ * synchronously. All of React Native's core components have been updated to
+ * use getViewManager(). For the next few releases, any usage of
+ * UIManager['viewManagerName'] will result in a warning. Because React Native
+ * does not support Proxy objects, a view manager access is implied if any of
+ * UIManager's properties that are not one of the properties below is being
+ * accessed. Once UIManager property accesses for view managers has been fully
+ * deprecated, this file will also be removed.
+ */
+module.exports = [
+  'clearJSResponder',
+  'configureNextLayoutAnimation',
+  'createView',
+  'dismissPopupMenu',
+  'dispatchViewManagerCommand',
+  'findSubviewIn',
+  'getConstantsForViewManager',
+  'getDefaultEventTypes',
+  'manageChildren',
+  'measure',
+  'measureInWindow',
+  'measureLayout',
+  'measureLayoutRelativeToParent',
+  'playTouchSound',
+  'removeRootView',
+  'removeSubviewsFromContainerWithID',
+  'replaceExistingNonRootView',
+  'sendAccessibilityEvent',
+  'setChildren',
+  'setJSResponder',
+  'setLayoutAnimationEnabledExperimental',
+  'showPopupMenu',
+  'updateView',
+  'viewIsDescendantOf',
+  'PopupMenu',
+  'LazyViewManagersEnabled',
+  'ViewManagerNames',
+  'StyleConstants',
+  'AccessibilityEventTypes',
+  'UIView',
+  '__takeSnapshot',
+  'takeSnapshot',
+  'getViewManagerConfig',
+  'measureViewsInRect',
+  'blur',
+  'focus',
+  'genericBubblingEventTypes',
+  'genericDirectEventTypes',
+];
diff --git a/Libraries/ReactNative/getNativeComponentAttributes.js b/Libraries/ReactNative/getNativeComponentAttributes.js
index 64771945f..6a8c54914 100644
--- a/Libraries/ReactNative/getNativeComponentAttributes.js
+++ b/Libraries/ReactNative/getNativeComponentAttributes.js
@@ -96,7 +96,7 @@ function attachDefaultEventTypes(viewConfig: any) {
   // This is supported on UIManager platforms (ex: Android),
   // as lazy view managers are not implemented for all platforms.
   // See [UIManager] for details on constants and implementations.
-  if (UIManager.ViewManagerNames) {
+  if (UIManager.ViewManagerNames || UIManager.LazyViewManagersEnabled) {
     // Lazy view managers enabled.
     viewConfig = merge(viewConfig, UIManager.getDefaultEventTypes());
   } else {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/BUCK b/ReactAndroid/src/main/java/com/facebook/react/uimanager/BUCK
index 262d60c93..9bb553e2e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/BUCK
@@ -30,7 +30,7 @@ rn_android_library(
         react_native_target("java/com/facebook/react/animation:animation"),
         react_native_target("java/com/facebook/react/bridge:bridge"),
         react_native_target("java/com/facebook/react/common:common"),
-        react_native_target("java/com/facebook/react/common:common"),
+        react_native_target("java/com/facebook/react/config:config"),
         react_native_target("java/com/facebook/react/module/annotations:annotations"),
         react_native_target("java/com/facebook/react/modules/core:core"),
         react_native_target("java/com/facebook/react/modules/i18nmanager:i18nmanager"),
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstantsHelper.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstantsHelper.java
index a6aed9343..8e993c193 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstantsHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstantsHelper.java
@@ -10,7 +10,7 @@ package com.facebook.react.uimanager;
 import static com.facebook.systrace.Systrace.TRACE_TAG_REACT_JAVA_BRIDGE;
 
 import com.facebook.react.common.MapBuilder;
-import com.facebook.systrace.Systrace;
+import com.facebook.react.config.ReactFeatureFlags;
 import com.facebook.systrace.SystraceMessage;
 import java.util.List;
 import java.util.Map;
@@ -35,7 +35,10 @@ import javax.annotation.Nullable;
   /* package */ static Map<String, Object> createConstants(
       UIManagerModule.ViewManagerResolver resolver) {
     Map<String, Object> constants = UIManagerModuleConstants.getConstants();
-    constants.put("ViewManagerNames", resolver.getViewManagerNames());
+    if (!ReactFeatureFlags.lazilyLoadViewManagers) {
+      constants.put("ViewManagerNames", resolver.getViewManagerNames());
+    }
+    constants.put("LazyViewManagersEnabled", true);
     return constants;
   }