Aku Laitinen (born as Matti Laitinen) is a Finnish actor. He is best known for appearing in various Finnish TV dramas and comedies, but he is most famously known as the voice over of Robby Ray Stewart from "Hannah Montana", Mr. Burns from "The Simpsons Movie", The Joker from "Lego Batman: The Movie – DC Super Heroes Unite", and "Batman Unlimited: Monster Mayhem", He is the narrator of Thomas & Friends in Finland. He has also worked as a narrator for "Spongebob Squarepants",

Other Finnish dubbing credits include: Obi-Wan Kenobi in "Lego Star Wars", Santa Claus in "Make Way for Noddy", Bananas B in "American Dragon: Jake Long", and Roger Doofenshmirtz in "Phineas and Ferb". Fu-Fu in "Sagwa, the Chinese Siamese Cat", Uncle Grandpa in "Uncle Grandpa", Larry The Lobster in "Spongebob Squarepants", and many more

He can speak fluent English, Swedish and German.

He currently lives in Riihimäki, a town in southern Finland.