diff --git a/src/dzitilesource.js b/src/dzitilesource.js
index f600a4d1..633c0371 100644
--- a/src/dzitilesource.js
+++ b/src/dzitilesource.js
@@ -124,10 +124,11 @@ $.extend( $.DziTileSource.prototype, $.TileSource.prototype, /** @lends OpenSead
      * @function
      * @param {Object|XMLDocument} data - the raw configuration
      * @param {String} url - the url the data was retrieved from if any.
+     * @param {String} postData - data for the post request or null
      * @return {Object} options - A dictionary of keyword arguments sufficient
      *      to configure this tile sources constructor.
      */
-    configure: function( data, url ){
+    configure: function( data, url, postData ){
 
         var options;
 
diff --git a/src/iiiftilesource.js b/src/iiiftilesource.js
index 76479e76..5450b612 100644
--- a/src/iiiftilesource.js
+++ b/src/iiiftilesource.js
@@ -183,6 +183,8 @@ $.extend( $.IIIFTileSource.prototype, $.TileSource.prototype, /** @lends OpenSea
      *
      * @function
      * @param {Object} data - the raw configuration
+     * @param {String} url - the url configuration was retrieved from
+     * @param {String} postData - data for the post request or null
      * @example <caption>IIIF 1.1 Info Looks like this</caption>
      * {
      *   "@context" : "http://library.stanford.edu/iiif/image-api/1.1/context.json",
@@ -197,7 +199,7 @@ $.extend( $.IIIFTileSource.prototype, $.TileSource.prototype, /** @lends OpenSea
      *   "profile" : "http://library.stanford.edu/iiif/image-api/1.1/compliance.html#level0"
      * }
      */
-    configure: function( data, url ){
+    configure: function( data, url, postData ){
         // Try to deduce our version and fake it upwards if needed
         if ( !$.isPlainObject(data) ) {
             var options = configureFromXml10( data );
diff --git a/src/imageloader.js b/src/imageloader.js
index faa1fac8..b48e1d55 100644
--- a/src/imageloader.js
+++ b/src/imageloader.js
@@ -43,6 +43,7 @@
  * @param {String} [options.loadWithAjax] - Whether to load this image with AJAX.
  * @param {String} [options.ajaxHeaders] - Headers to add to the image request if using AJAX.
  * @param {String} [options.crossOriginPolicy] - CORS policy to use for downloads
+ * @param {String} [options.postData] - POST parameters or null
  * @param {Function} [options.callback] - Called once image has been downloaded.
  * @param {Function} [options.abort] - Called when this image job is aborted.
  * @param {Number} [options.timeout] - The max number of milliseconds that this image job may take to complete.
@@ -96,6 +97,7 @@ ImageJob.prototype = {
                 withCredentials: this.ajaxWithCredentials,
                 headers: this.ajaxHeaders,
                 responseType: "arraybuffer",
+                postData: this.postData,
                 success: function(request) {
                     var blb;
                     // Make the raw data into a blob.
@@ -196,6 +198,7 @@ $.ImageLoader.prototype = {
      * @param {String} [options.loadWithAjax] - Whether to load this image with AJAX.
      * @param {String} [options.ajaxHeaders] - Headers to add to the image request if using AJAX.
      * @param {String|Boolean} [options.crossOriginPolicy] - CORS policy to use for downloads
+     * @param {String} [options.postData] - POST parameters in k=v&k2=v2... form or null
      * @param {Boolean} [options.ajaxWithCredentials] - Whether to set withCredentials on AJAX
      * requests.
      * @param {Function} [options.callback] - Called once image has been downloaded.
@@ -212,6 +215,7 @@ $.ImageLoader.prototype = {
                 ajaxHeaders: options.loadWithAjax ? options.ajaxHeaders : null,
                 crossOriginPolicy: options.crossOriginPolicy,
                 ajaxWithCredentials: options.ajaxWithCredentials,
+                postData: options.postData,
                 callback: complete,
                 abort: options.abort,
                 timeout: this.timeout
diff --git a/src/imagetilesource.js b/src/imagetilesource.js
index 25f67988..cc0d2619 100644
--- a/src/imagetilesource.js
+++ b/src/imagetilesource.js
@@ -89,10 +89,11 @@
          * @function
          * @param {Object} options - the options
          * @param {String} dataUrl - the url the image was retrieved from, if any.
+         * @param {String} postData - data for the post request or null
          * @return {Object} options - A dictionary of keyword arguments sufficient
          *      to configure this tile sources constructor.
          */
-        configure: function (options, dataUrl) {
+        configure: function (options, dataUrl, postData) {
             return options;
         },
         /**
diff --git a/src/legacytilesource.js b/src/legacytilesource.js
index c1c5e253..cdf0cbc9 100644
--- a/src/legacytilesource.js
+++ b/src/legacytilesource.js
@@ -122,10 +122,11 @@ $.extend( $.LegacyTileSource.prototype, $.TileSource.prototype, /** @lends OpenS
      * @function
      * @param {Object|XMLDocument} configuration - the raw configuration
      * @param {String} dataUrl - the url the data was retrieved from if any.
+     * @param {String} postData - data for the post request or null
      * @return {Object} options - A dictionary of keyword arguments sufficient
      *      to configure this tile sources constructor.
      */
-    configure: function( configuration, dataUrl ){
+    configure: function( configuration, dataUrl, postData ){
 
         var options;
 
diff --git a/src/openseadragon.js b/src/openseadragon.js
index 5b0accb0..68761635 100644
--- a/src/openseadragon.js
+++ b/src/openseadragon.js
@@ -2273,6 +2273,7 @@ function OpenSeadragon( options ){
          * @param {Function} options.error - a function to call on when an error occurs
          * @param {Object} options.headers - headers to add to the AJAX request
          * @param {String} options.responseType - the response type of the the AJAX request
+         * @param {String} options.postData - HTTP POST data in k=v&k2=v2... form, GET method used if null
          * @param {Boolean} [options.withCredentials=false] - whether to set the XHR's withCredentials
          * @throws {Error}
          * @returns {XMLHttpRequest}
@@ -2281,6 +2282,7 @@ function OpenSeadragon( options ){
             var withCredentials;
             var headers;
             var responseType;
+            var postData;
 
             // Note that our preferred API is that you pass in a single object; the named
             // arguments are for legacy support.
@@ -2290,6 +2292,7 @@ function OpenSeadragon( options ){
                 withCredentials = url.withCredentials;
                 headers = url.headers;
                 responseType = url.responseType || null;
+                postData = url.postData || null;
                 url = url.url;
             }
 
@@ -2322,8 +2325,9 @@ function OpenSeadragon( options ){
                 }
             };
 
+            var method = postData ? "POST" : "GET";
             try {
-                request.open( "GET", url, true );
+                request.open( method, url, true );
 
                 if (responseType) {
                     request.responseType = responseType;
@@ -2341,7 +2345,7 @@ function OpenSeadragon( options ){
                     request.withCredentials = true;
                 }
 
-                request.send(null);
+                request.send(postData);
             } catch (e) {
                 $.console.log( "%s while making AJAX request: %s", e.name, e.message );
 
diff --git a/src/osmtilesource.js b/src/osmtilesource.js
index c28945bb..d5a11163 100644
--- a/src/osmtilesource.js
+++ b/src/osmtilesource.js
@@ -122,10 +122,11 @@ $.extend( $.OsmTileSource.prototype, $.TileSource.prototype, /** @lends OpenSead
      * @function
      * @param {Object} data - the raw configuration
      * @param {String} url - the url the data was retrieved from if any.
+     * @param {String} postData - data for the post request or null
      * @return {Object} options - A dictionary of keyword arguments sufficient
      *      to configure this tile sources constructor.
      */
-    configure: function( data, url ){
+    configure: function( data, url, postData ){
         return data;
     },
 
diff --git a/src/tile.js b/src/tile.js
index 701db750..e8a97da9 100644
--- a/src/tile.js
+++ b/src/tile.js
@@ -45,6 +45,7 @@
  * @param {Boolean} exists Is this tile a part of a sparse image? ( Also has
  *      this tile failed to load? )
  * @param {String} url The URL of this tile's image.
+ * @param {String} postData post parameters or null
  * @param {CanvasRenderingContext2D} context2D The context2D of this tile if it
  * is provided directly by the tile source.
  * @param {Boolean} loadWithAjax Whether this tile image should be loaded with an AJAX request .
@@ -53,7 +54,7 @@
  * drawing operation, in pixels. Note that this only works when drawing with canvas; when drawing
  * with HTML the entire tile is always used.
  */
-$.Tile = function(level, x, y, bounds, exists, url, context2D, loadWithAjax, ajaxHeaders, sourceBounds) {
+$.Tile = function(level, x, y, bounds, exists, url, postData, context2D, loadWithAjax, ajaxHeaders, sourceBounds) {
     /**
      * The zoom level this tile belongs to.
      * @member {Number} level
@@ -97,6 +98,13 @@ $.Tile = function(level, x, y, bounds, exists, url, context2D, loadWithAjax, aja
      * @memberof OpenSeadragon.Tile#
      */
     this.url     = url;
+    /**
+     * Post parameters for this tile. Either it is an URL-encoded string
+     * in k1=v1&k2=v2... format or null
+     * @member {String} postData
+     * @memberof OpenSeadragon.Tile#
+     */
+    this.postData  = postData;
     /**
      * The context2D of this tile if it is provided directly by the tile source.
      * @member {CanvasRenderingContext2D} context2D
diff --git a/src/tiledimage.js b/src/tiledimage.js
index 82e35ed7..39f195f2 100644
--- a/src/tiledimage.js
+++ b/src/tiledimage.js
@@ -1490,6 +1490,7 @@ function getTile(
         sourceBounds,
         exists,
         url,
+        post,
         ajaxHeaders,
         context2D,
         tile;
@@ -1508,6 +1509,7 @@ function getTile(
         sourceBounds = tileSource.getTileBounds( level, xMod, yMod, true );
         exists  = tileSource.tileExists( level, xMod, yMod );
         url     = tileSource.getTileUrl( level, xMod, yMod );
+        post    = tileSource.getTilePostData( level, xMod, yMod );
 
         // Headers are only applicable if loadTilesWithAjax is set
         if (tiledImage.loadTilesWithAjax) {
@@ -1530,6 +1532,7 @@ function getTile(
             bounds,
             exists,
             url,
+            post,
             context2D,
             tiledImage.loadTilesWithAjax,
             ajaxHeaders,
@@ -1573,6 +1576,7 @@ function loadTile( tiledImage, tile, time ) {
     tile.loading = true;
     tiledImage._imageLoader.addJob({
         src: tile.url,
+        postData: tile.postData,
         loadWithAjax: tile.loadWithAjax,
         ajaxHeaders: tile.ajaxHeaders,
         crossOriginPolicy: tiledImage.crossOriginPolicy,
diff --git a/src/tilesource.js b/src/tilesource.js
index aab7f134..8c66258e 100644
--- a/src/tilesource.js
+++ b/src/tilesource.js
@@ -426,6 +426,13 @@ $.TileSource.prototype = {
             }
         }
 
+        var postData = null;
+        var hashIdx = url.indexOf("#");
+        if (hashIdx !== -1) {
+            postData = url.substring(hashIdx + 1);
+            url = url.substr(0, hashIdx - 1);
+        }
+
         callback = function( data ){
             if( typeof (data) === "string" ) {
                 data = $.parseXml( data );
@@ -447,7 +454,7 @@ $.TileSource.prototype = {
                 return;
             }
 
-            options = $TileSource.prototype.configure.apply( _this, [ data, url ]);
+            options = $TileSource.prototype.configure.apply( _this, [ data, url, postData ]);
             if (options.ajaxWithCredentials === undefined) {
                 options.ajaxWithCredentials = _this.ajaxWithCredentials;
             }
@@ -482,6 +489,7 @@ $.TileSource.prototype = {
             // request info via xhr asynchronously.
             $.makeAjaxRequest( {
                 url: url,
+                postData: postData,
                 withCredentials: this.ajaxWithCredentials,
                 headers: this.ajaxHeaders,
                 success: function( xhr ) {
@@ -559,11 +567,12 @@ $.TileSource.prototype = {
      * @param {String|Object|Array|Document} data
      * @param {String} url - the url the data was loaded
      *      from if any.
+     * @param {String} postData value obtained from the url after '#' sign or null
      * @return {Object} options - A dictionary of keyword arguments sufficient
      *      to configure this tile sources constructor.
      * @throws {Error}
      */
-    configure: function( data, url ) {
+    configure: function( data, url, postData ) {
         throw new Error( "Method not implemented." );
     },
 
@@ -584,6 +593,20 @@ $.TileSource.prototype = {
         throw new Error( "Method not implemented." );
     },
 
+    /**
+     * Must use AJAX in order to work, i.e. loadTilesWithAjax = true is set.
+     * It should return url-encoded string with the following structure:
+     *   key=value&key2=value2...
+     * or null in case GET is used instead.
+     * @param level
+     * @param x
+     * @param y
+     * @return {string || null} post data to send with tile configuration request
+     */
+    getTilePostData: function( level, x, y ) {
+        return null;
+    },
+
     /**
      * Responsible for retrieving the headers which will be attached to the image request for the
      * region specified by the given x, y, and level components.
diff --git a/src/tmstilesource.js b/src/tmstilesource.js
index abb8f2db..355ffa99 100644
--- a/src/tmstilesource.js
+++ b/src/tmstilesource.js
@@ -111,10 +111,11 @@ $.extend( $.TmsTileSource.prototype, $.TileSource.prototype, /** @lends OpenSead
      * @function
      * @param {Object} data - the raw configuration
      * @param {String} url - the url the data was retrieved from if any.
+     * @param {String} postData - data for the post request or null
      * @return {Object} options - A dictionary of keyword arguments sufficient
      *      to configure this tile sources constructor.
      */
-    configure: function( data, url ){
+    configure: function( data, url, postData ){
         return data;
     },
 
diff --git a/src/zoomifytilesource.js b/src/zoomifytilesource.js
index 9ffa4988..540b2695 100644
--- a/src/zoomifytilesource.js
+++ b/src/zoomifytilesource.js
@@ -122,10 +122,11 @@
          * @function
          * @param {Object} data - the raw configuration
          * @param {String} url - the url the data was retrieved from if any.
+         * @param {String} postData - data for the post request or null
          * @return {Object} options - A dictionary of keyword arguments sufficient
          *      to configure this tile sources constructor.
          */
-        configure: function(data, url) {
+        configure: function(data, url, postData) {
             return data;
         },