diff --git a/types/replace-string/index.d.ts b/types/replace-string/index.d.ts
new file mode 100644
index 0000000000..7819754746
--- /dev/null
+++ b/types/replace-string/index.d.ts
@@ -0,0 +1,26 @@
+// Type definitions for replace-string 2.0
+// Project: https://github.com/sindresorhus/replace-string#readme
+// Definitions by: BendingBender <https://github.com/BendingBender>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export = replaceString;
+
+declare function replaceString(
+    input: string,
+    needle: string,
+    replacement: string | replaceString.ReplacementFn,
+    options?: replaceString.Options
+): string;
+
+declare namespace replaceString {
+    type ReplacementFn = (
+        needle: string,
+        matchCount: number,
+        input: string,
+        matchIndex: number
+    ) => string;
+
+    interface Options {
+        fromIndex?: number;
+    }
+}
diff --git a/types/replace-string/replace-string-tests.ts b/types/replace-string/replace-string-tests.ts
new file mode 100644
index 0000000000..385ae1f023
--- /dev/null
+++ b/types/replace-string/replace-string-tests.ts
@@ -0,0 +1,21 @@
+import replaceString = require('replace-string');
+
+const input = 'My friend has a 🐑. I want a 🐑 too!';
+
+// $ExpectType string
+replaceString(input, '🐑', '🦄');
+// $ExpectType string
+replaceString(input, '🐑', (needle, matchCount, input, matchIndex) => {
+    // $ExpectType string
+    needle;
+    // $ExpectType number
+    matchCount;
+    // $ExpectType string
+    input;
+    // $ExpectType number
+    matchIndex;
+
+    return '🦄';
+});
+// $ExpectType string
+replaceString(input, '🐑', '🦄', { fromIndex: 1 });
diff --git a/types/replace-string/tsconfig.json b/types/replace-string/tsconfig.json
new file mode 100644
index 0000000000..ef0dcb7937
--- /dev/null
+++ b/types/replace-string/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "replace-string-tests.ts"
+    ]
+}
diff --git a/types/replace-string/tslint.json b/types/replace-string/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/replace-string/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }