Robert Missler (born 1 April 1958 in Berlin, Germany) is a German actor and voice artist who provides voices for the German dub of Thomas & Friends.

He has worked as a musician, presenter, and radio personality. He is known to be a very versatile voice actor and has appeared in multiple shows.

He is also the official voiceover for Grover from "Sesame Street", James Wilson from "House M.D", HK-47 from "Star Wars: Knights of the Old Republic", and Ray from Disney's "The Princess and the Frog".