diff --git a/types/to-snake-case/index.d.ts b/types/to-snake-case/index.d.ts
new file mode 100644
index 0000000000..ce3220275b
--- /dev/null
+++ b/types/to-snake-case/index.d.ts
@@ -0,0 +1,7 @@
+// Type definitions for to-snake-case 1.0
+// Project: https://github.com/ianstormtaylor/to-snake-case
+// Definitions by: Leonid Logvinov <https://github.com/LogvinovLeon>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare function toSnakeCase(str: string): string;
+export = toSnakeCase;
diff --git a/types/to-snake-case/to-snake-case-tests.ts b/types/to-snake-case/to-snake-case-tests.ts
new file mode 100644
index 0000000000..47c798bfd1
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+++ b/types/to-snake-case/to-snake-case-tests.ts
@@ -0,0 +1,3 @@
+import toSnakeCase = require('to-snake-case');
+
+toSnakeCase('camelCase');
diff --git a/types/to-snake-case/tsconfig.json b/types/to-snake-case/tsconfig.json
new file mode 100644
index 0000000000..aec7de1407
--- /dev/null
+++ b/types/to-snake-case/tsconfig.json
@@ -0,0 +1,16 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": ["es6"],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictFunctionTypes": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": ["../"],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": ["index.d.ts", "to-snake-case-tests.ts"]
+}
diff --git a/types/to-snake-case/tslint.json b/types/to-snake-case/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/to-snake-case/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }