diff --git a/types/mongodb-uri/index.d.ts b/types/mongodb-uri/index.d.ts
new file mode 100644
index 0000000000..6d6d9c1839
--- /dev/null
+++ b/types/mongodb-uri/index.d.ts
@@ -0,0 +1,101 @@
+// Type definitions for mongodb-uri 0.9
+// Project: https://github.com/mongolab/mongodb-uri-node
+// Definitions by: mernxl <https://github.com/mernxl>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export interface Host {
+    host: string;
+    port?: number;
+}
+
+export interface parserOptions {
+    scheme: string;
+}
+
+export interface UriObject {
+    scheme: string;
+    hosts: Host[];
+
+    username?: string;
+    password?: string;
+    database?: string;
+    options?: any;
+}
+
+export class MongodbUriParser {
+    constructor(options?: parserOptions);
+
+    /**
+     * Takes a URI of the form:
+     *
+     *   mongodb://[username[:password]@]host1[:port1][,host2[:port2],...[,hostN[:portN]]][/[database]][?options]
+     *
+     * scheme and hosts will always be present. Other fields will only be present in the result if they were
+     * present in the input.
+     */
+    parse(uri: string): UriObject;
+
+    /**
+     * Takes a URI object and returns a URI string of the form:
+     *
+     *   mongodb://[username[:password]@]host1[:port1][,host2[:port2],...[,hostN[:portN]]][/[database]][?options]
+     *
+     */
+    format(uriObject?: UriObject): string;
+
+    /**
+     * Takes either a URI object or string and returns a Mongoose connection string. Specifically, instead of listing all
+     * hosts and ports in a single URI, a Mongoose connection string contains a list of URIs each with a single host and
+     * port pair.
+     *
+     * Useful in environments where a MongoDB URI environment variable is provided, but needs to be programmatically
+     * transformed into a string digestible by mongoose.connect()--for example, when deploying to a PaaS like Heroku
+     * using a MongoDB add-on like MongoLab.
+     *
+     */
+    formatMongoose(uri: UriObject | string): string;
+}
+
+/**
+ * Takes a URI of the form:
+ *
+ *   mongodb://[username[:password]@]host1[:port1][,host2[:port2],...[,hostN[:portN]]][/[database]][?options]
+ *
+ * and returns an object of the form:
+ *
+ *   {
+ *     scheme: !String,
+ *     username: String=,
+ *     password: String=,
+ *     hosts: [ { host: !String, port: Number= }, ... ],
+ *     database: String=,
+ *     options: Object=
+ *   }
+ *
+ * scheme and hosts will always be present. Other fields will only be present in the result if they were
+ * present in the input.
+ *
+ */
+export function parse(uri: string): UriObject;
+
+/**
+ * Takes a URI object and returns a URI string of the form:
+ *
+ *   mongodb://[username[:password]@]host1[:port1][,host2[:port2],...[,hostN[:portN]]][/[database]][?options]
+ *
+ * @param uriObject
+ */
+export function format(uriObject?: UriObject): string;
+
+/**
+ * Takes either a URI object or string and returns a Mongoose connection string. Specifically, instead of listing all
+ * hosts and ports in a single URI, a Mongoose connection string contains a list of URIs each with a single host and
+ * port pair.
+ *
+ * Useful in environments where a MongoDB URI environment variable is provided, but needs to be programmatically
+ * transformed into a string digestible by mongoose.connect()--for example, when deploying to a PaaS like Heroku
+ * using a MongoDB add-on like MongoLab.
+ *
+ * @param  uri
+ */
+export function formatMongoose(uri: UriObject | string): string;
diff --git a/types/mongodb-uri/mongodb-uri-tests.ts b/types/mongodb-uri/mongodb-uri-tests.ts
new file mode 100644
index 0000000000..2befe964ed
--- /dev/null
+++ b/types/mongodb-uri/mongodb-uri-tests.ts
@@ -0,0 +1,12 @@
+import { format, formatMongoose, MongodbUriParser, parse } from 'mongodb-uri';
+
+const urlString = 'mongodb://localhost';
+const parser = new MongodbUriParser();
+
+const parsed1 = parser.parse(urlString);
+const urlString1 = parser.format(parsed1);
+const formatMongoose1 = parser.formatMongoose(parsed1);
+
+const parsed2 = parse(urlString);
+const urlString2 = format(parsed2);
+const formatMongoose2 = formatMongoose(parsed2);
diff --git a/types/mongodb-uri/tsconfig.json b/types/mongodb-uri/tsconfig.json
new file mode 100644
index 0000000000..68ca627c9a
--- /dev/null
+++ b/types/mongodb-uri/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "mongodb-uri-tests.ts"
+    ]
+}
diff --git a/types/mongodb-uri/tslint.json b/types/mongodb-uri/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/mongodb-uri/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }