diff --git a/types/wif/index.d.ts b/types/wif/index.d.ts
new file mode 100644
index 0000000000..21b4175905
--- /dev/null
+++ b/types/wif/index.d.ts
@@ -0,0 +1,27 @@
+// Type definitions for wif 2.0
+// Project: https://github.com/bitcoinjs/wif
+// Definitions by: Daniel Byrne <https://github.com/danwbyrne>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/// <reference types="node"/>
+
+export interface WIFReturn {
+    readonly version: number;
+    readonly privateKey: Buffer;
+    readonly compressed: boolean;
+}
+
+export function decodeRaw(buffer: Buffer, version?: number): WIFReturn;
+export function decode(string: string, version: number): WIFReturn;
+
+export function encodeRaw(
+    version: number,
+    privateKey: Buffer,
+    compressed: boolean
+): Buffer;
+
+export function encode(
+    version: number | WIFReturn,
+    privateKey: Buffer,
+    compressed: boolean
+): Buffer;
diff --git a/types/wif/tsconfig.json b/types/wif/tsconfig.json
new file mode 100644
index 0000000000..f412a0b7cc
--- /dev/null
+++ b/types/wif/tsconfig.json
@@ -0,0 +1,19 @@
+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "lib": ["es6"],
+    "noImplicitAny": true,
+    "noImplicitThis": true,
+    "strictNullChecks": true,
+    "strictFunctionTypes": true,
+    "baseUrl": "../",
+    "typeRoots": ["../"],
+    "types": [],
+    "noEmit": true,
+    "forceConsistentCasingInFileNames": true
+  },
+  "files": [
+		"index.d.ts",
+		"wif-tests.ts"
+	]
+}
diff --git a/types/wif/tslint.json b/types/wif/tslint.json
new file mode 100644
index 0000000000..d88586e5bd
--- /dev/null
+++ b/types/wif/tslint.json
@@ -0,0 +1,3 @@
+{
+  "extends": "dtslint/dt.json"
+}
diff --git a/types/wif/wif-tests.ts b/types/wif/wif-tests.ts
new file mode 100644
index 0000000000..b833d7b1f5
--- /dev/null
+++ b/types/wif/wif-tests.ts
@@ -0,0 +1,16 @@
+import wif = require('wif');
+
+const testString = 'test';
+const testBuffer = Buffer.from(testString);
+
+// $ExpectType WIFReturn
+wif.decodeRaw(testBuffer);
+// $ExpectType WIFReturn
+wif.decodeRaw(testBuffer, 0);
+// $ExpectType WIFReturn
+wif.decode(testString, 0);
+
+// $ExpectType Buffer
+wif.encodeRaw(1, testBuffer, true);
+// $ExpectType Buffer
+wif.encode(1, testBuffer, true);