diff --git a/src/Three.d.ts b/src/Three.d.ts
index fc61e25f4633cc8605352ea983ec6a169209f145..deb9f697931f0cd76752ec1152f3755a3ed9f94b 100644
--- a/src/Three.d.ts
+++ b/src/Three.d.ts
@@ -12,6 +12,7 @@ export * from './scenes/Fog';
 export * from './scenes/Scene';
 export * from './objects/Sprite';
 export * from './objects/LOD';
+export * from './objects/InstancedMesh';
 export * from './objects/SkinnedMesh';
 export * from './objects/Skeleton';
 export * from './objects/Bone';
diff --git a/src/objects/InstancedMesh.d.ts b/src/objects/InstancedMesh.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6754932dcd70b78d9fdc91e158512c0da1ce936b
--- /dev/null
+++ b/src/objects/InstancedMesh.d.ts
@@ -0,0 +1,23 @@
+import { Geometry } from './../core/Geometry';
+import { BufferGeometry } from '../core/BufferGeometry';
+import { Material } from './../materials/Material';
+import { BufferAttribute } from './../core/BufferAttribute.js';
+import { Mesh } from './Mesh';
+import { Matrix4 } from './../math/Matrix4';
+
+export class InstancedMesh extends Mesh {
+
+	constructor(
+		geometry: Geometry | BufferGeometry,
+		material: Material | Material[],
+		count: number
+	);
+
+	count: number;
+	instanceMatrix: BufferAttribute;
+	isInstancedMesh: true;
+	type: 'InstancedMesh';
+
+	setMatrixAt( index: number, matrix: Matrix4 ): void;
+
+}
diff --git a/src/objects/InstancedMesh.js b/src/objects/InstancedMesh.js
index 3ecc223d1650d721f0fd987ca262cea7998c5e4b..0fbf639ac66b2eb463d2952ebfae3498cc330c19 100644
--- a/src/objects/InstancedMesh.js
+++ b/src/objects/InstancedMesh.js
@@ -13,6 +13,8 @@ function InstancedMesh( geometry, material, count ) {
 
 	this.count = count;
 
+	this.type = 'InstancedMesh';
+
 }
 
 InstancedMesh.prototype = Object.assign( Object.create( Mesh.prototype ), {