Santiago Ziesmer (born July 25, 1953) is a Spanish-born German actor and voice actor.
Santiago Ziesmer trained in theater from 1972 to 1975 in the theater studio "Hanny Herter" in Berlin. Since 1973, he has regularly acted in theater. He has had a recurring role in the RTL Television series Hinter Gittern – Der Frauenknast.
With a salient voice and versatile range, Ziesmer is best known for dubbing over Jaleel White as Steve Urkel in Family Matters, Ren Höek in The Ren & Stimpy Show (alongside Oliver Feld's Stimpy), and SpongeBob SquarePants in the TV series of the same name. He is also the official German dub voice of Steve Buscemi, the dubover voice of Ted Schmidt in Queer as Folk, and the dubover voice of the Chris Rock character Pookie in the film New Jack City. He is the German voices of Wakko Warner from Animaniacs and Dale Gribble from King of the Hill. He has supplied his voice to a number of Disney productions, including the German dub of DuckTales as Dewey and the Winnie-the-Pooh series as Piglet, and Beauty and the Beast as LeFou. Ziesmer played a dual role in the popular Dragon Ball franchise as the first voice of Vegeta in Dragon Ball Z and Gil in Dragon Ball GT and he also voiced Monokuma in Danganronpa: The Animation.