diff --git a/Examples/2048/GameBoard.js b/Examples/2048/GameBoard.js
index 1d7f34085..6ed92e6b5 100644
--- a/Examples/2048/GameBoard.js
+++ b/Examples/2048/GameBoard.js
@@ -17,7 +17,7 @@
 'use strict';
 
 // NB: Taken straight from: https://github.com/IvanVergiliev/2048-react/blob/master/src/board.js
-//     with no modificiation except to format it for CommonJS and fix lint/flow errors
+//     with no modification except to format it for CommonJS and fix lint/flow errors
 
 var rotateLeft = function (matrix) {
   var rows = matrix.length;
diff --git a/Examples/UIExplorer/UIExplorerUnitTests/LayoutSubviewsOrderingTest.m b/Examples/UIExplorer/UIExplorerUnitTests/LayoutSubviewsOrderingTest.m
index fcd796114..39c0404e0 100644
--- a/Examples/UIExplorer/UIExplorerUnitTests/LayoutSubviewsOrderingTest.m
+++ b/Examples/UIExplorer/UIExplorerUnitTests/LayoutSubviewsOrderingTest.m
@@ -14,7 +14,7 @@
 /**
  * This test exists to insure that didLayoutSubviews is always called immediately after layoutSubviews for a VC:View
  * pair. In Catalyst we have multiple levels of ViewController containment, and we rely on this ordering
- * to insure that layoutGuides are set on RKViewControllers before Views further down in the heirarchy have
+ * to insure that layoutGuides are set on RKViewControllers before Views further down in the hierarchy have
  * their layoutSubviews called (and need to use the aforementioned layoutGuides)
  */
 - (void)testLayoutSubviewsOrdering
@@ -63,7 +63,7 @@
     }
   }] viewDidLayoutSubviews];
 
-  // setup View heirarchy and force layout
+  // setup View hierarchy and force layout
   parentVC.view = parentView;
   childVC.view = childView;
   [parentVC addChildViewController:childVC];
diff --git a/Examples/UIExplorer/UIExplorerUnitTests/RCTContextExecutorTests.m b/Examples/UIExplorer/UIExplorerUnitTests/RCTContextExecutorTests.m
index c1b96b13e..07d1ebfb0 100644
--- a/Examples/UIExplorer/UIExplorerUnitTests/RCTContextExecutorTests.m
+++ b/Examples/UIExplorer/UIExplorerUnitTests/RCTContextExecutorTests.m
@@ -98,7 +98,7 @@ static uint64_t _get_time_nanoseconds(void)
 {
 /**
  * Since we almost don't change the RCTContextExecutor logic, and this test is
- * very likely to become flaky (specially accross different devices) leave it
+ * very likely to become flaky (specially across different devices) leave it
  * to be run manually
  *
  * Previous Values: If you change the executor code, you should update this values
diff --git a/Examples/UIExplorer/WebViewExample.js b/Examples/UIExplorer/WebViewExample.js
index f8183b12b..c8c547f97 100644
--- a/Examples/UIExplorer/WebViewExample.js
+++ b/Examples/UIExplorer/WebViewExample.js
@@ -148,7 +148,7 @@ var WebViewExample = React.createClass({
         url: url,
       });
     }
-    // dismiss keyoard
+    // dismiss keyboard
     this.refs[TEXT_INPUT_REF].blur();
   },
 
diff --git a/Examples/UIExplorer/XHRExample.android.js b/Examples/UIExplorer/XHRExample.android.js
index ad4bbf772..0ee51a8e3 100644
--- a/Examples/UIExplorer/XHRExample.android.js
+++ b/Examples/UIExplorer/XHRExample.android.js
@@ -30,7 +30,7 @@ var XHRExampleHeaders = require('./XHRExampleHeaders');
 var XHRExampleCookies = require('./XHRExampleCookies');
 
 
-// TODO t7093728 This is a simlified XHRExample.ios.js.
+// TODO t7093728 This is a simplified XHRExample.ios.js.
 // Once we have Camera roll, Toast, Intent (for opening URLs)
 // we should make this consistent with iOS.
 
diff --git a/Libraries/Animated/examples/demo.html b/Libraries/Animated/examples/demo.html
index bc4c85e1f..4f95e114f 100644
--- a/Libraries/Animated/examples/demo.html
+++ b/Libraries/Animated/examples/demo.html
@@ -326,7 +326,7 @@ examplify(React.createClass({
 
 <p><code>Animated</code> can offload the animation to a different thread (CoreAnimation, CSS transitions, main thread...) and we don't have a good way to know the real value. If you try to query the value then modify it, you are going to be out of sync and the result will look terrible.</p>
 
-<p>There's however one exception: when you want to stop the current animation. You need to know where it stopped in order to continue from there. We cannot know the value synchronously so we give it via a callback in <code>stopAnimation</code>. It will not suffer from beign out of sync since the animation is no longer running.</p>
+<p>There's however one exception: when you want to stop the current animation. You need to know where it stopped in order to continue from there. We cannot know the value synchronously so we give it via a callback in <code>stopAnimation</code>. It will not suffer from being out of sync since the animation is no longer running.</p>
 
 <script type="text/jsx;harmony=true;stripTypes=true">
 examplify(React.createClass({
diff --git a/Libraries/Animated/src/AnimatedImplementation.js b/Libraries/Animated/src/AnimatedImplementation.js
index e7edc16a9..09f95000d 100644
--- a/Libraries/Animated/src/AnimatedImplementation.js
+++ b/Libraries/Animated/src/AnimatedImplementation.js
@@ -578,7 +578,7 @@ class AnimatedValue extends AnimatedWithChildren {
   /**
    * Adds an asynchronous listener to the value so you can observe updates from
    * animations or whathaveyou.  This is useful because there is no way to
-   * syncronously read the value because it might be driven natively.
+   * synchronously read the value because it might be driven natively.
    */
   addListener(callback: ValueListenerCallback): string {
     var id = String(_uniqueId++);
@@ -1485,7 +1485,7 @@ var event = function(
  * The simplest workflow is to create an `Animated.Value`, hook it up to one or
  * more style attributes of an animated component, and then drive updates either
  * via animations, such as `Animated.timing`, or by hooking into gestures like
- * panning or scolling via `Animated.event`.  `Animated.Value` can also bind to
+ * panning or scrolling via `Animated.event`.  `Animated.Value` can also bind to
  * props other than style, and can be interpolated as well.  Here is a basic
  * example of a container view that will fade in when it's mounted:
  *
@@ -1517,7 +1517,7 @@ var event = function(
  * Note that only animatable components can be animated.  `View`, `Text`, and
  * `Image` are already provided, and you can create custom ones with
  * `createAnimatedComponent`.  These special components do the magic of binding
- * the animated values to the properties, and do targetted native updates to
+ * the animated values to the properties, and do targeted native updates to
  * avoid the cost of the react render and reconciliation process on every frame.
  * They also handle cleanup on unmount so they are safe by default.
  *
@@ -1559,7 +1559,7 @@ var event = function(
  * Animation App, and [Animations documentation guide](http://facebook.github.io/react-native/docs/animations.html).
  *
  * Note that `Animated` is designed to be fully serializable so that animations
- * can be run in a high performace way, independent of the normal JavaScript
+ * can be run in a high performance way, independent of the normal JavaScript
  * event loop. This does influence the API, so keep that in mind when it seems a
  * little trickier to do something compared to a fully synchronous system.
  * Checkout `Animated.Value.addListener` as a way to work around some of these
diff --git a/Libraries/CameraRoll/CameraRoll.js b/Libraries/CameraRoll/CameraRoll.js
index c7e28d951..48c313219 100644
--- a/Libraries/CameraRoll/CameraRoll.js
+++ b/Libraries/CameraRoll/CameraRoll.js
@@ -128,7 +128,7 @@ class CameraRoll {
    *
    *   - local URI
    *   - assets-library tag
-   *   - a tag not maching any of the above, which means the image data will
+   *   - a tag not matching any of the above, which means the image data will
    * be stored in memory (and consume memory as long as the process is alive)
    *
    * @param successCallback Invoked with the value of `tag` on success.
diff --git a/Libraries/Components/DrawerAndroid/DrawerLayoutAndroid.android.js b/Libraries/Components/DrawerAndroid/DrawerLayoutAndroid.android.js
index 5a48ee9ab..4383f9f84 100644
--- a/Libraries/Components/DrawerAndroid/DrawerLayoutAndroid.android.js
+++ b/Libraries/Components/DrawerAndroid/DrawerLayoutAndroid.android.js
@@ -102,7 +102,7 @@ var DrawerLayoutAndroid = React.createClass({
     /**
      * Function called when the drawer state has changed. The drawer can be in 3 states:
      * - idle, meaning there is no interaction with the navigation view happening at the time
-     * - dragging, meaning there is currently an interation with the navigation view
+     * - dragging, meaning there is currently an interaction with the navigation view
      * - settling, meaning that there was an interaction with the navigation view, and the
      * navigation view is now finishing it's closing or opening animation
      */
diff --git a/Libraries/Components/MapView/MapView.js b/Libraries/Components/MapView/MapView.js
index b62b122df..747e366fc 100644
--- a/Libraries/Components/MapView/MapView.js
+++ b/Libraries/Components/MapView/MapView.js
@@ -150,7 +150,7 @@ var MapView = React.createClass({
      *
      * - standard: standard road map (default)
      * - satellite: satellite view
-     * - hybrid: satellite view with roads and points of interest overlayed
+     * - hybrid: satellite view with roads and points of interest overlaid
      */
     mapType: React.PropTypes.oneOf([
       'standard',
@@ -172,7 +172,7 @@ var MapView = React.createClass({
       longitude: React.PropTypes.number.isRequired,
 
       /**
-       * Distance between the minimun and the maximum latitude/longitude
+       * Distance between the minimum and the maximum latitude/longitude
        * to be displayed.
        */
       latitudeDelta: React.PropTypes.number.isRequired,
@@ -218,7 +218,7 @@ var MapView = React.createClass({
        * and custom pin images.
        *
        * Note that on iOS 8 and earlier, only the standard PinColor constants
-       * are supported for regualr pins. For custom pin images, any tintColor
+       * are supported for regular pins. For custom pin images, any tintColor
        * value is supported on all iOS versions.
        * @platform ios
        */
diff --git a/Libraries/Components/Navigation/NavigatorIOS.ios.js b/Libraries/Components/Navigation/NavigatorIOS.ios.js
index 37cc1899e..32d51ddc8 100644
--- a/Libraries/Components/Navigation/NavigatorIOS.ios.js
+++ b/Libraries/Components/Navigation/NavigatorIOS.ios.js
@@ -119,7 +119,7 @@ type Event = Object;
  * },
  * ```
  *
- * Now MyView will be rendered by the navigator. It will recieve the route
+ * Now MyView will be rendered by the navigator. It will receive the route
  * object in the `route` prop, a navigator, and all of the props specified in
  * `passProps`.
  *
diff --git a/Libraries/Components/ScrollView/RecyclerViewBackedScrollView.android.js b/Libraries/Components/ScrollView/RecyclerViewBackedScrollView.android.js
index fa019c6be..f8fecfdc3 100644
--- a/Libraries/Components/ScrollView/RecyclerViewBackedScrollView.android.js
+++ b/Libraries/Components/ScrollView/RecyclerViewBackedScrollView.android.js
@@ -20,9 +20,9 @@ var INNERVIEW = 'InnerView';
  * Wrapper around android native recycler view.
  *
  * It simply renders rows passed as children in a separate recycler view cells
- * similarily to how `ScrollView` is doing it. Thanks to the fact that it uses
+ * similarly to how `ScrollView` is doing it. Thanks to the fact that it uses
  * native `RecyclerView` though, rows that are out of sight are going to be
- * automatically detached (similarily on how this would work with
+ * automatically detached (similarly on how this would work with
  * `removeClippedSubviews = true` on a `ScrollView.js`).
  *
  * CAUTION: This is an experimental component and should only be used together
diff --git a/Libraries/Components/ScrollView/ScrollView.js b/Libraries/Components/ScrollView/ScrollView.js
index 8069b9647..5f6e08d86 100644
--- a/Libraries/Components/ScrollView/ScrollView.js
+++ b/Libraries/Components/ScrollView/ScrollView.js
@@ -184,7 +184,7 @@ var ScrollView = React.createClass({
     minimumZoomScale: PropTypes.number,
     /**
      * Fires at most once per frame during scrolling. The frequency of the
-     * events can be contolled using the `scrollEventThrottle` prop.
+     * events can be controlled using the `scrollEventThrottle` prop.
      */
     onScroll: PropTypes.func,
     /**
@@ -438,7 +438,7 @@ var ScrollView = React.createClass({
 
     var onRefreshStart = this.props.onRefreshStart;
     // this is necessary because if we set it on props, even when empty,
-    // it'll trigger the default pull-to-refresh behaviour on native.
+    // it'll trigger the default pull-to-refresh behavior on native.
     props.onRefreshStart = onRefreshStart
       ? function() { onRefreshStart && onRefreshStart(this.endRefreshing); }.bind(this)
       : null;
diff --git a/Libraries/Components/SliderIOS/SliderIOS.ios.js b/Libraries/Components/SliderIOS/SliderIOS.ios.js
index 925f9ad60..aff67e6ef 100644
--- a/Libraries/Components/SliderIOS/SliderIOS.ios.js
+++ b/Libraries/Components/SliderIOS/SliderIOS.ios.js
@@ -39,7 +39,7 @@ var SliderIOS = React.createClass({
      * Default value is 0.
      *
      * *This is not a controlled component*, e.g. if you don't update
-     * the value, the component won't be reset to its inital value.
+     * the value, the component won't be reset to its initial value.
      */
     value: PropTypes.number,
 
diff --git a/Libraries/Components/Switch/Switch.js b/Libraries/Components/Switch/Switch.js
index 450c0ff4f..ceab1f0ba 100644
--- a/Libraries/Components/Switch/Switch.js
+++ b/Libraries/Components/Switch/Switch.js
@@ -36,7 +36,7 @@ var Switch = React.createClass({
      */
     disabled: React.PropTypes.bool,
     /**
-     * Invoked with the new value when the value chages.
+     * Invoked with the new value when the value changes.
      */
     onValueChange: React.PropTypes.func,
     /**
diff --git a/Libraries/Components/SwitchAndroid/SwitchAndroid.android.js b/Libraries/Components/SwitchAndroid/SwitchAndroid.android.js
index feba96b8d..2cbfb87dd 100644
--- a/Libraries/Components/SwitchAndroid/SwitchAndroid.android.js
+++ b/Libraries/Components/SwitchAndroid/SwitchAndroid.android.js
@@ -36,7 +36,7 @@ var SwitchAndroid = React.createClass({
      */
     disabled: PropTypes.bool,
     /**
-     * Invoked with the new value when the value chages.
+     * Invoked with the new value when the value changes.
      */
     onValueChange: PropTypes.func,
     /**
diff --git a/Libraries/Components/TabBarIOS/TabBarItemIOS.ios.js b/Libraries/Components/TabBarIOS/TabBarItemIOS.ios.js
index f3fb6964c..bfdae5433 100644
--- a/Libraries/Components/TabBarIOS/TabBarItemIOS.ios.js
+++ b/Libraries/Components/TabBarIOS/TabBarItemIOS.ios.js
@@ -31,7 +31,7 @@ var TabBarItemIOS = React.createClass({
     ]),
     /**
      * Items comes with a few predefined system icons. Note that if you are
-     * using them, the title and selectedIcon will be overriden with the
+     * using them, the title and selectedIcon will be overridden with the
      * system ones.
      */
     systemIcon: React.PropTypes.oneOf([
@@ -109,7 +109,7 @@ var TabBarItemIOS = React.createClass({
     } else {
       var tabContents = <View />;
     }
-    
+
     return (
       <RCTTabBarItem
         {...props}
diff --git a/Libraries/Components/ToolbarAndroid/ToolbarAndroid.android.js b/Libraries/Components/ToolbarAndroid/ToolbarAndroid.android.js
index 2658361a9..844889da0 100644
--- a/Libraries/Components/ToolbarAndroid/ToolbarAndroid.android.js
+++ b/Libraries/Components/ToolbarAndroid/ToolbarAndroid.android.js
@@ -97,7 +97,7 @@ var ToolbarAndroid = React.createClass({
      */
     navIcon: optionalImageSource,
     /**
-     * Callback that is called when an action is selected. The only argument that is passeed to the
+     * Callback that is called when an action is selected. The only argument that is passed to the
      * callback is the position of the action in the actions array.
      */
     onActionSelected: ReactPropTypes.func,
diff --git a/Libraries/Components/Touchable/Position.js b/Libraries/Components/Touchable/Position.js
index 0de7372e9..5287e929a 100644
--- a/Libraries/Components/Touchable/Position.js
+++ b/Libraries/Components/Touchable/Position.js
@@ -11,7 +11,7 @@ var twoArgumentPooler = PooledClass.twoArgumentPooler;
 /**
  * Position does not expose methods for construction via an `HTMLDOMElement`,
  * because it isn't meaningful to construct such a thing without first defining
- * a frame of refrence.
+ * a frame of reference.
  *
  * @param {number} windowStartKey Key that window starts at.
  * @param {number} windowEndKey Key that window ends at.
@@ -29,4 +29,3 @@ Position.prototype.destructor = function() {
 PooledClass.addPoolingTo(Position, twoArgumentPooler);
 
 module.exports = Position;
-
diff --git a/Libraries/Components/Touchable/Touchable.js b/Libraries/Components/Touchable/Touchable.js
index 9172739eb..c8d67ab3e 100644
--- a/Libraries/Components/Touchable/Touchable.js
+++ b/Libraries/Components/Touchable/Touchable.js
@@ -31,7 +31,7 @@ var queryLayoutByID = require('queryLayoutByID');
  *
  * A good tap interaction isn't as simple as you might think. There should be a
  * slight delay before showing a highlight when starting a touch. If a
- * subsequent touch move exceeds the boundary of the elemement, it should
+ * subsequent touch move exceeds the boundary of the element, it should
  * unhighlight, but if that same touch is brought back within the boundary, it
  * should rehighlight again. A touch can move in and out of that boundary
  * several times, each time toggling highlighting, but a "press" is only
@@ -574,7 +574,7 @@ var TouchableMixin = {
         curState !== States.RESPONDER_ACTIVE_LONG_PRESS_IN) {
       console.error('Attempted to transition from state `' + curState + '` to `' +
         States.RESPONDER_ACTIVE_LONG_PRESS_IN + '`, which is not supported. This is ' +
-        'most likely due to `Touchable.longPressDelayTimeout` not being cancelled.');   
+        'most likely due to `Touchable.longPressDelayTimeout` not being cancelled.');
     } else {
       this._receiveSignal(Signals.LONG_PRESS_DETECTED, e);
     }
diff --git a/Libraries/Components/ViewPager/ViewPagerAndroid.android.js b/Libraries/Components/ViewPager/ViewPagerAndroid.android.js
index ec08841ec..e5708d5eb 100644
--- a/Libraries/Components/ViewPager/ViewPagerAndroid.android.js
+++ b/Libraries/Components/ViewPager/ViewPagerAndroid.android.js
@@ -22,7 +22,7 @@ var VIEWPAGER_REF = 'viewPager';
 /**
  * Container that allows to flip left and right between child views. Each
  * child view of the `ViewPagerAndroid` will be treated as a separate page
- * and will be streched to fill the `ViewPagerAndroid`.
+ * and will be stretched to fill the `ViewPagerAndroid`.
  *
  * It is important all children are `<View>`s and not composite components.
  * You can set style properties like `padding` or `backgroundColor` for each
@@ -79,7 +79,7 @@ var ViewPagerAndroid = React.createClass({
     onPageScroll: ReactPropTypes.func,
 
     /**
-     * This callback will be caleld once ViewPager finish navigating to selected page
+     * This callback will be called once ViewPager finish navigating to selected page
      * (when user swipes between pages). The `event.nativeEvent` object passed to this
      * callback will have following fields:
      *  - position - index of page that has been selected
diff --git a/Libraries/CustomComponents/ListView/ListView.js b/Libraries/CustomComponents/ListView/ListView.js
index 5b1ef4db0..976967e64 100644
--- a/Libraries/CustomComponents/ListView/ListView.js
+++ b/Libraries/CustomComponents/ListView/ListView.js
@@ -137,7 +137,7 @@ var ListView = React.createClass({
     renderRow: PropTypes.func.isRequired,
     /**
      * How many rows to render on initial component mount.  Use this to make
-     * it so that the first screen worth of data apears at one time instead of
+     * it so that the first screen worth of data appears at one time instead of
      * over the course of multiple frames.
      */
     initialListSize: PropTypes.number,
diff --git a/Libraries/CustomComponents/ListView/ListViewDataSource.js b/Libraries/CustomComponents/ListView/ListViewDataSource.js
index 0b1f0ecd4..0c18aa646 100644
--- a/Libraries/CustomComponents/ListView/ListViewDataSource.js
+++ b/Libraries/CustomComponents/ListView/ListViewDataSource.js
@@ -141,7 +141,7 @@ class ListViewDataSource {
 
   /**
    * Clones this `ListViewDataSource` with the specified `dataBlob` and
-   * `rowIdentities`. The `dataBlob` is just an aribitrary blob of data. At
+   * `rowIdentities`. The `dataBlob` is just an arbitrary blob of data. At
    * construction an extractor to get the interesting information was defined
    * (or the default was used).
    *
diff --git a/Libraries/CustomComponents/Navigator/Navigator.js b/Libraries/CustomComponents/Navigator/Navigator.js
index 22bb84365..1735d6f31 100644
--- a/Libraries/CustomComponents/Navigator/Navigator.js
+++ b/Libraries/CustomComponents/Navigator/Navigator.js
@@ -50,7 +50,7 @@ var rebound = require('rebound');
 var PropTypes = React.PropTypes;
 
 // TODO: this is not ideal because there is no guarantee that the navigator
-// is full screen, hwoever we don't have a good way to measure the actual
+// is full screen, however we don't have a good way to measure the actual
 // size of the navigator right now, so this is the next best thing.
 var SCREEN_WIDTH = Dimensions.get('window').width;
 var SCREEN_HEIGHT = Dimensions.get('window').height;
diff --git a/Libraries/Image/ImageResizeMode.js b/Libraries/Image/ImageResizeMode.js
index b947b9525..538287258 100644
--- a/Libraries/Image/ImageResizeMode.js
+++ b/Libraries/Image/ImageResizeMode.js
@@ -31,7 +31,7 @@ var ImageResizeMode = keyMirror({
   /**
    * stretch - The image will be stretched to fill the entire frame of the
    * view without clipping. This may change the aspect ratio of the image,
-   * distoring it.
+   * distorting it.
    */
   stretch: null,
 });
diff --git a/Libraries/JavaScriptAppEngine/Initialization/SourceMap.js b/Libraries/JavaScriptAppEngine/Initialization/SourceMap.js
index 53d08f829..ce42bb6ce 100644
--- a/Libraries/JavaScriptAppEngine/Initialization/SourceMap.js
+++ b/Libraries/JavaScriptAppEngine/Initialization/SourceMap.js
@@ -327,7 +327,7 @@ define('source-map/source-map-generator', ['require', 'exports', 'module' ,  'so
    * Applies the mappings of a sub-source-map for a specific source file to the
    * source map being generated. Each mapping to the supplied source file is
    * rewritten using the supplied source map. Note: The resolution for the
-   * resulting mappings is the minimium of this map and the supplied map.
+   * resulting mappings is the minimum of this map and the supplied map.
    *
    * @param aSourceMapConsumer The source map to be applied.
    * @param aSourceFile Optional. The filename of the source file.
@@ -1058,7 +1058,7 @@ define('source-map/source-map-consumer', ['require', 'exports', 'module' ,  'sou
    *
    *   - version: Which version of the source map spec this map is following.
    *   - sources: An array of URLs to the original source files.
-   *   - names: An array of identifiers which can be referrenced by individual mappings.
+   *   - names: An array of identifiers which can be referenced by individual mappings.
    *   - sourceRoot: Optional. The URL root from which all sources are relative.
    *   - sourcesContent: Optional. An array of contents of the original source files.
    *   - mappings: A string of base64 VLQs which contain the actual mappings.
@@ -1369,7 +1369,7 @@ define('source-map/source-map-consumer', ['require', 'exports', 'module' ,  'sou
   /**
    * Returns the original source content. The only argument is the url of the
    * original source file. Returns null if no original source content is
-   * availible.
+   * available.
    */
   SourceMapConsumer.prototype.sourceContentFor =
     function SourceMapConsumer_sourceContentFor(aSource) {
diff --git a/Libraries/PushNotificationIOS/PushNotificationIOS.js b/Libraries/PushNotificationIOS/PushNotificationIOS.js
index d4735fb41..74a8422d6 100644
--- a/Libraries/PushNotificationIOS/PushNotificationIOS.js
+++ b/Libraries/PushNotificationIOS/PushNotificationIOS.js
@@ -235,7 +235,7 @@ class PushNotificationIOS {
   }
 
   /**
-   * You will never need to instansiate `PushNotificationIOS` yourself.
+   * You will never need to instantiate `PushNotificationIOS` yourself.
    * Listening to the `notification` event and invoking
    * `popInitialNotification` is sufficient
    */
diff --git a/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestCase.h b/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestCase.h
index 063e32a48..a3ffe02b1 100644
--- a/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestCase.h
+++ b/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestCase.h
@@ -71,7 +71,7 @@ FBSnapshotVerifyLayerWithReferenceDirectorySuffix(layer__, identifier__, @""); \
 @property (readwrite, nonatomic, assign) BOOL recordMode;
 
 /**
- Performs the comparisong or records a snapshot of the layer if recordMode is YES.
+ Performs the comparisons or records a snapshot of the layer if recordMode is YES.
  @param layer The Layer to snapshot
  @param referenceImagesDirectory The directory in which reference images are stored.
  @param identifier An optional identifier, used if there are multiple snapshot tests in a given -test method.
@@ -84,7 +84,7 @@ FBSnapshotVerifyLayerWithReferenceDirectorySuffix(layer__, identifier__, @""); \
                          error:(NSError **)errorPtr;
 
 /**
- Performs the comparisong or records a snapshot of the view if recordMode is YES.
+ Performs the comparisons or records a snapshot of the view if recordMode is YES.
  @param view The view to snapshot
  @param referenceImagesDirectory The directory in which reference images are stored.
  @param identifier An optional identifier, used if there are multiple snapshot tests in a given -test method.
diff --git a/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestController.h b/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestController.h
index 349384d8f..449e3983a 100644
--- a/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestController.h
+++ b/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestController.h
@@ -97,7 +97,7 @@ extern NSString *const FBReferenceImageFilePathKey;
 
 
 /**
- The directory in which referfence images are stored.
+ The directory in which reference images are stored.
  */
 @property (readwrite, nonatomic, copy) NSString *referenceImagesDirectory;
 
diff --git a/Libraries/ReactNative/ReactNativeEventEmitter.js b/Libraries/ReactNative/ReactNativeEventEmitter.js
index b0bb56598..ac8854b6c 100644
--- a/Libraries/ReactNative/ReactNativeEventEmitter.js
+++ b/Libraries/ReactNative/ReactNativeEventEmitter.js
@@ -107,7 +107,7 @@ var ReactNativeEventEmitter = merge(ReactEventEmitterMixin, {
    *
    * @see receiveEvent.
    *
-   * @param {rootNodeID} rootNodeID React root node ID that event occured on.
+   * @param {rootNodeID} rootNodeID React root node ID that event occurred on.
    * @param {TopLevelType} topLevelType Top level type of event.
    * @param {object} nativeEventParam Object passed from native.
    */
@@ -127,9 +127,9 @@ var ReactNativeEventEmitter = merge(ReactEventEmitterMixin, {
   },
 
   /**
-   * Publically exposed method on module for native objc to invoke when a top
+   * Publicly exposed method on module for native objc to invoke when a top
    * level event is extracted.
-   * @param {rootNodeID} rootNodeID React root node ID that event occured on.
+   * @param {rootNodeID} rootNodeID React root node ID that event occurred on.
    * @param {TopLevelType} topLevelType Top level type of event.
    * @param {object} nativeEventParam Object passed from native.
    */
@@ -183,7 +183,7 @@ var ReactNativeEventEmitter = merge(ReactEventEmitterMixin, {
 
     for (var jj = 0; jj < changedTouches.length; jj++) {
       var touch = changedTouches[jj];
-      // Touch objects can fullfill the role of `DOM` `Event` objects if we set
+      // Touch objects can fulfill the role of `DOM` `Event` objects if we set
       // the `changedTouches`/`touches`. This saves allocations.
       touch.changedTouches = changedTouches;
       touch.touches = touches;
diff --git a/Libraries/ReactNative/ReactNativeReconcileTransaction.js b/Libraries/ReactNative/ReactNativeReconcileTransaction.js
index 309630e3c..b67219649 100644
--- a/Libraries/ReactNative/ReactNativeReconcileTransaction.js
+++ b/Libraries/ReactNative/ReactNativeReconcileTransaction.js
@@ -66,7 +66,7 @@ var Mixin = {
    * @see Transaction
    * @abstract
    * @final
-   * @return {array<object>} List of operation wrap proceedures.
+   * @return {array<object>} List of operation wrap procedures.
    *   TODO: convert to array<TransactionWrapper>
    */
   getTransactionWrappers: function() {
@@ -83,7 +83,7 @@ var Mixin = {
 
   /**
    * `PooledClass` looks for this, and will invoke this before allowing this
-   * instance to be resused.
+   * instance to be reused.
    */
   destructor: function() {
     CallbackQueue.release(this.reactMountReady);
diff --git a/Libraries/StyleSheet/processColor.js b/Libraries/StyleSheet/processColor.js
index e259113e3..09ea03697 100644
--- a/Libraries/StyleSheet/processColor.js
+++ b/Libraries/StyleSheet/processColor.js
@@ -30,7 +30,7 @@ function processColor(color) {
         // Android use 32 bit *signed* integer to represent the color
         // We utilize the fact that bitwise operations in JS also operates on
         // signed 32 bit integers, so that we can use those to convert from
-        // *unsiged* to *signed* 32bit int that way.
+        // *unsigned* to *signed* 32bit int that way.
         colorInt = colorInt | 0x0;
       }
       return colorInt;
diff --git a/Libraries/Text/RCTTextField.m b/Libraries/Text/RCTTextField.m
index b8d172cc2..cb1aba3b9 100644
--- a/Libraries/Text/RCTTextField.m
+++ b/Libraries/Text/RCTTextField.m
@@ -58,7 +58,7 @@ RCT_NOT_IMPLEMENTED(- (instancetype)initWithCoder:(NSCoder *)aDecoder)
                                eventCount:_nativeEventCount];
 }
 
-// This method is overriden for `onKeyPress`. The manager
+// This method is overridden for `onKeyPress`. The manager
 // will not send a keyPress for text that was pasted.
 - (void)paste:(id)sender
 {
diff --git a/Libraries/Text/Text.js b/Libraries/Text/Text.js
index 8d9f68fba..e86f69fc1 100644
--- a/Libraries/Text/Text.js
+++ b/Libraries/Text/Text.js
@@ -71,7 +71,7 @@ const viewConfig = {
 const Text = React.createClass({
   propTypes: {
     /**
-     * Used to truncate the text with an elipsis after computing the text
+     * Used to truncate the text with an ellipsis after computing the text
      * layout, including line wrapping, such that the total number of lines
      * does not exceed this number.
      */
diff --git a/Libraries/Utilities/BackAndroid.android.js b/Libraries/Utilities/BackAndroid.android.js
index d7f3a482b..f828f2f7e 100644
--- a/Libraries/Utilities/BackAndroid.android.js
+++ b/Libraries/Utilities/BackAndroid.android.js
@@ -36,7 +36,7 @@ RCTDeviceEventEmitter.addListener(DEVICE_BACK_EVENT, function() {
 });
 
 /**
- * Detect hardware back button presses, and programatically invoke the default back button
+ * Detect hardware back button presses, and programmatically invoke the default back button
  * functionality to exit the app if there are no listeners or if none of the listeners return true.
  *
  * Example:
diff --git a/Libraries/Utilities/CSSVarConfig.js b/Libraries/Utilities/CSSVarConfig.js
index cb018be0a..d3177310c 100644
--- a/Libraries/Utilities/CSSVarConfig.js
+++ b/Libraries/Utilities/CSSVarConfig.js
@@ -5,7 +5,7 @@
  */
 'use strict';
 
-// this a partial list of the contants in CSSConstants:: from PHP that are applicable to mobile
+// this a partial list of the constants in CSSConstants:: from PHP that are applicable to mobile
 
 module.exports = {
   'fbui-accent-blue': '#5890ff',
diff --git a/Libraries/Utilities/buildStyleInterpolator.js b/Libraries/Utilities/buildStyleInterpolator.js
index 1ff93d106..0c0fa7fd1 100644
--- a/Libraries/Utilities/buildStyleInterpolator.js
+++ b/Libraries/Utilities/buildStyleInterpolator.js
@@ -102,7 +102,7 @@ var ARGUMENT_NAMES_RE = /([^\s,]+)/g;
  *
  *  inline(inlineMe, ['hi', 'bye']);  // "hi = bye + bye;"
  *
- * @param {function} func Any simple function whos arguments can be replaced via a regex.
+ * @param {function} func Any simple function who's arguments can be replaced via a regex.
  * @param {array<string>} replaceWithArgs Corresponding names of variables
  * within an environment, to replace `func` args with.
  * @return {string} Resulting function body string.
diff --git a/Libraries/Utilities/mergeIntoFast.js b/Libraries/Utilities/mergeIntoFast.js
index 1a97d07b7..b7160875a 100644
--- a/Libraries/Utilities/mergeIntoFast.js
+++ b/Libraries/Utilities/mergeIntoFast.js
@@ -13,7 +13,7 @@
 
 /**
  * Faster version of `mergeInto` that doesn't check its arguments and
- * also copies over prototye inherited properties.
+ * also copies over prototype inherited properties.
  *
  * @param {object} one Object to assign to.
  * @param {object} two Object to assign from.
diff --git a/Libraries/Utilities/truncate.js b/Libraries/Utilities/truncate.js
index a15da571b..462a023d1 100644
--- a/Libraries/Utilities/truncate.js
+++ b/Libraries/Utilities/truncate.js
@@ -25,7 +25,7 @@ var defaultOptions = {
   elipsis: '...',
 };
 
-// maxChars (including elipsis)
+// maxChars (including ellipsis)
 var truncate = function(
   str: ?string,
   maxChars: number,