diff --git a/types/kissfft-js/index.d.ts b/types/kissfft-js/index.d.ts
new file mode 100644
index 0000000000..dc745354ec
--- /dev/null
+++ b/types/kissfft-js/index.d.ts
@@ -0,0 +1,18 @@
+// Type definitions for kissfft-js 0.1
+// Project: https://github.com/j-funk/kissfft-js#readme
+// Definitions by: racerhere <https://github.com/racerhere>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped/types/kissfft-js
+
+export class FFT {
+    constructor(size: number);
+    forward(input: number[]): number[];
+    inverse(input: number[]): number[];
+    dispose(): void;
+}
+
+export class FFTR {
+    constructor(size: number);
+    forward(input: number[]): number[];
+    inverse(input: number[]): number[];
+    dispose(): void;
+}
diff --git a/types/kissfft-js/kissfft-js-tests.ts b/types/kissfft-js/kissfft-js-tests.ts
new file mode 100644
index 0000000000..7de3255660
--- /dev/null
+++ b/types/kissfft-js/kissfft-js-tests.ts
@@ -0,0 +1,11 @@
+import * as kissFFT from "kissfft-js";
+
+const fft = new kissFFT.FFT(0); // $ExpectType FFT
+fft.forward([1, 2, 3]); // $ExpectType number[]
+fft.inverse([1, 2, 3]); // $ExpectType number[]
+fft.dispose(); // $ExpectType void
+
+const fftr = new kissFFT.FFTR(0); // $ExpectType FFTR
+fftr.forward([1, 2, 3]); // $ExpectType number[]
+fftr.inverse([1, 2, 3]); // $ExpectType number[]
+fftr.dispose(); // $ExpectType void
diff --git a/types/kissfft-js/tsconfig.json b/types/kissfft-js/tsconfig.json
new file mode 100644
index 0000000000..5164a8f4bd
--- /dev/null
+++ b/types/kissfft-js/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true,
+        "strictFunctionTypes": true
+    },
+    "files": [
+        "index.d.ts",
+        "kissfft-js-tests.ts"
+    ]
+}
diff --git a/types/kissfft-js/tslint.json b/types/kissfft-js/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/kissfft-js/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }