diff --git a/Definitions/backbone.d.ts b/Definitions/backbone.d.ts
new file mode 100644
index 0000000000..a770d3fc3d
--- /dev/null
+++ b/Definitions/backbone.d.ts
@@ -0,0 +1,114 @@
+// Type definitions for Backbone 0.9
+// https://github.com/borisyankov/DefinitelyTyped
+
+
+declare module Backbone {
+    export class Events {
+        on(events: string, callback: (event) => any, context?: any): any;
+        off(events?: string, callback?: (event) => any, context?: any): any;
+        trigger(events: string, ...args: any[]): any;
+    }
+
+    export class Model {
+        extend(properties, classProperties? );
+        constructor (attributes: any);
+
+        get(attribute);
+        set(attributes, options? );
+        escape(attribute);
+        has(attribute);
+        unset(attribute, options?);
+        clear(options? );
+
+        id: any;
+        idAttribute: any;
+        cid;
+        attributes;
+        changed;
+
+        defaults();
+        toJSON();
+        fetch(options? );
+        save(attributes? , options? );
+        destroy(options? );
+        validate(attributes);
+        isValid();
+        url();
+        urlRoot();
+        parse(response);
+        clone();
+        isNew();
+        change();
+        hasChanged(attribute? );
+        changedAttributes(attributes? );
+        previous(attribute);
+        previousAttributes();
+    }
+
+    export class Collection {
+        extend(properties, classProperties? );
+        model;
+        constructor (models? , options? );
+        models;
+        toJSON();
+        // Add 28 UNDERSCORE bindings
+        add(models, options?);
+        remove(models, options? );
+        get(id);
+        getByCid(cid);
+        at(index);
+        push(model, options?);
+        pop(options? );
+        unshift(model, options? );
+        shift(options? );
+        length;
+        comparator;
+        sort(options? );
+        pluck(attribute);
+        where(attributes);
+        url();
+        parse(response);
+        fetch(options? );
+        reset(models, options? );
+        create(attributes, options?);
+    }
+
+    export class Router {
+        extend(properties, classProperties? );
+        routes;
+        constructor (options? );
+        route(route, name, callback? );
+        navigate(fragment, options? );
+    }
+
+    export class History {
+        start(options? );
+    }
+
+    export class Sync {
+        sync(method, model, options? );
+        emulateHTTP: bool;
+        emulateJSONBackbone: bool;
+    }
+
+    export class View {
+        extend(properties, classProperties? );
+        constructor (options?: any);
+        el;
+        $el;
+        setElement(element);
+        attributes;
+        $(selector);
+        render();
+        remove();
+        make(tagName, attributes?, content?);
+        delegateEvents(events? );
+        undelegateEvents();
+    }
+
+    export class Utility {
+        noConflict(): any;
+        setDomLibrary(jQueryNew);
+    }
+}
+