diff --git a/types/mime-types/index.d.ts b/types/mime-types/index.d.ts
new file mode 100644
index 0000000000..7be0867a31
--- /dev/null
+++ b/types/mime-types/index.d.ts
@@ -0,0 +1,11 @@
+// Type definitions for mime-types 2.1
+// Project: https://github.com/jshttp/mime-types#readme
+// Definitions by: Gyusun Yeom <https://github.com/Perlmint>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export function lookup(filenameOrExt: string): string | false;
+export function contentType(filenameOrExt: string): string | false;
+export function extension(typeString: string): string | false;
+export function charset(typeString: string): string | false;
+export const types: {[key: string]: string};
+export const extensions: {[key: string]: string[]};
diff --git a/types/mime-types/mime-types-tests.ts b/types/mime-types/mime-types-tests.ts
new file mode 100644
index 0000000000..35b5246831
--- /dev/null
+++ b/types/mime-types/mime-types-tests.ts
@@ -0,0 +1,18 @@
+import * as mime from 'mime-types';
+
+mime.lookup('json');             // 'application/json'
+mime.lookup('.md');              // 'text/x-markdown'
+mime.lookup('file.html');        // 'text/html'
+mime.lookup('folder/file.js');   // 'application/javascript'
+mime.lookup('folder/.htaccess'); // false
+
+mime.lookup('cats'); // false
+mime.contentType('markdown');  // 'text/x-markdown; charset=utf-8'
+mime.contentType('file.json'); // 'application/json; charset=utf-8'
+
+// from a full path
+mime.contentType('.json'); // 'application/json; charset=utf-8'
+
+mime.extension('application/octet-stream'); // 'bin'
+
+mime.charset('text/x-markdown'); // 'UTF-8'
diff --git a/types/mime-types/tsconfig.json b/types/mime-types/tsconfig.json
new file mode 100644
index 0000000000..015c5a8080
--- /dev/null
+++ b/types/mime-types/tsconfig.json
@@ -0,0 +1,22 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "mime-types-tests.ts"
+    ]
+}
diff --git a/types/mime-types/tslint.json b/types/mime-types/tslint.json
new file mode 100644
index 0000000000..377cc837d4
--- /dev/null
+++ b/types/mime-types/tslint.json
@@ -0,0 +1 @@
+{ "extends": "../tslint.json" }