diff --git a/express-graphql/express-graphql-tests.ts b/express-graphql/express-graphql-tests.ts
new file mode 100644
index 000000000..ec9e48ea4
--- /dev/null
+++ b/express-graphql/express-graphql-tests.ts
@@ -0,0 +1,10 @@
+/// <reference path="./express-graphql.d.ts" />
+/// <reference path="../express/express.d.ts" />
+
+var express = require("express");
+var graphqlHTTP = require("express-graphql");
+var app = express();
+
+var schema = {};
+
+app.use("/graphql", graphqlHTTP({ schema: schema, graphiql: true }));
diff --git a/express-graphql/express-graphql.d.ts b/express-graphql/express-graphql.d.ts
new file mode 100644
index 000000000..537439dbe
--- /dev/null
+++ b/express-graphql/express-graphql.d.ts
@@ -0,0 +1,52 @@
+// Type definitions for express-graphql
+// Project: https://www.npmjs.org/package/express-graphql
+// Definitions by: Isman Usoh <https://github.com/isman-usoh>, Nitin Tutlani <https://github.com/nitintutlani>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../express/express.d.ts" />
+
+declare module "express-graphql" {
+    import { Request, Response } from "express";
+
+    /**
+     * Used to configure the graphQLHTTP middleware by providing a schema
+     * and other configuration options.
+     */
+    export type Options = ((req: Request) => OptionsObj) | OptionsObj
+    export type OptionsObj = {
+        /**
+         * A GraphQL schema from graphql-js.
+         */
+        schema: Object,
+
+        /**
+         * An object to pass as the rootValue to the graphql() function.
+         */
+        rootValue?: Object,
+
+        /**
+         * A boolean to configure whether the output should be pretty-printed.
+         */
+        pretty?: boolean,
+
+        /**
+         * An optional function which will be used to format any errors produced by
+         * fulfilling a GraphQL operation. If no function is provided, GraphQL's
+         * default spec-compliant `formatError` function will be used.
+         */
+        formatError?: Function,
+
+        /**
+         * A boolean to optionally enable GraphiQL mode.
+         */
+        graphiql?: boolean,
+    };
+
+    type Middleware = (request: Request, response: Response) => void;
+
+    /**
+     * Middleware for express; takes an options object or function as input to
+     * configure behavior, and returns an express middleware.
+     */
+    export default function graphqlHTTP(options: Options): Middleware;
+}