diff --git a/types/ntlm-client/index.d.ts b/types/ntlm-client/index.d.ts
new file mode 100644
index 0000000000..b2f668bd12
--- /dev/null
+++ b/types/ntlm-client/index.d.ts
@@ -0,0 +1,29 @@
+// Type definitions for ntlm-client 0.1
+// Project: https://github.com/clncln1/node-ntlm-client
+// Definitions by: Manuel Borrajo <https://github.com/borrajo>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/// <reference types="node"/>
+
+interface NtlmType2 {
+    flags: number;
+    encoding: string;
+    version: number;
+    challenge: Buffer;
+    targetName: string;
+    targetInfo: {
+        parsed: {
+            DOMAIN: string;
+            SERVER: string;
+            DNS: string;
+            FQDN: string;
+            PARENT_DNS: string;
+        },
+        buffer: Buffer;
+    };
+}
+
+declare function createType1Message(workstation: string, domain: string): string;
+declare function decodeType2Message(type1Message: string): NtlmType2;
+declare function createType3Message(type2Message: NtlmType2, username: string, password: string, workstation: string, domain: string): string;
+export { createType1Message, decodeType2Message, createType3Message };
diff --git a/types/ntlm-client/ntlm-client-tests.ts b/types/ntlm-client/ntlm-client-tests.ts
new file mode 100644
index 0000000000..5cd3b1d4d2
--- /dev/null
+++ b/types/ntlm-client/ntlm-client-tests.ts
@@ -0,0 +1,28 @@
+import ntlm = require('ntlm-client');
+
+const type2 = {
+  flags: 0,
+  encoding: '',
+  version: 3,
+  challenge: new Buffer(''),
+  targetName: '',
+  targetInfo: {
+    parsed: {
+      DOMAIN: '',
+      SERVER: '',
+      DNS: '',
+      FQDN: '',
+      PARENT_DNS: '',
+    },
+    buffer: new Buffer(''),
+  }
+};
+
+// $ExpectType string
+ntlm.createType1Message('', '');
+
+// $ExpectType string
+ntlm.createType3Message(type2, '', '', '', '');
+
+// $ExpectType NtlmType2
+ntlm.decodeType2Message('');
diff --git a/types/ntlm-client/tsconfig.json b/types/ntlm-client/tsconfig.json
new file mode 100644
index 0000000000..b3b5731cb5
--- /dev/null
+++ b/types/ntlm-client/tsconfig.json
@@ -0,0 +1,24 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictFunctionTypes": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [
+        ],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "ntlm-client-tests.ts"
+    ]
+}
\ No newline at end of file
diff --git a/types/ntlm-client/tslint.json b/types/ntlm-client/tslint.json
new file mode 100644
index 0000000000..e60c15844f
--- /dev/null
+++ b/types/ntlm-client/tslint.json
@@ -0,0 +1,3 @@
+{
+    "extends": "dtslint/dt.json"
+}
\ No newline at end of file