diff --git a/types/unique-hash-stream/index.d.ts b/types/unique-hash-stream/index.d.ts
new file mode 100644
index 0000000000..71399359d0
--- /dev/null
+++ b/types/unique-hash-stream/index.d.ts
@@ -0,0 +1,16 @@
+// Type definitions for unique-hash-stream 1.0
+// Project: https://github.com/stream-utils/unique-hash-stream
+// Definitions by: BendingBender <https://github.com/BendingBender>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/// <reference types="node" />
+import { Transform } from 'stream';
+
+export = UniqueFactory;
+
+declare function UniqueFactory(hashingFn?: (doc: any) => string): Transform;
+
+declare namespace UniqueFactory {
+    const Unique: typeof Transform;
+    function calculate(doc: any): string;
+}
diff --git a/types/unique-hash-stream/tsconfig.json b/types/unique-hash-stream/tsconfig.json
new file mode 100644
index 0000000000..44d0966096
--- /dev/null
+++ b/types/unique-hash-stream/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",
+        "unique-hash-stream-tests.ts"
+    ]
+}
diff --git a/types/unique-hash-stream/tslint.json b/types/unique-hash-stream/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/unique-hash-stream/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }
diff --git a/types/unique-hash-stream/unique-hash-stream-tests.ts b/types/unique-hash-stream/unique-hash-stream-tests.ts
new file mode 100644
index 0000000000..3132f99e1d
--- /dev/null
+++ b/types/unique-hash-stream/unique-hash-stream-tests.ts
@@ -0,0 +1,12 @@
+import unique = require('unique-hash-stream');
+
+const stream = unique();
+unique(doc => {
+    doc; // $ExpectType any
+    return 'foo';
+});
+stream; // $ExpectType Transform
+unique.Unique; // $ExpectType typeof Transform
+unique.calculate; // $ExpectType (doc: any) => string
+
+stream instanceof unique.Unique;