Mustafa Gundogdu (Turkish: Mustafa Gündoğdu; born 2 October 1966), best known under his stage name Mousse T., is a German DJ, record producer, film composer and judge on season 15 of Deutschland sucht den Superstar, the German version of Pop Idol. He is best known for the 1998 house hit "Horny '98" (famous for the hook "I'm horny") and for his collaboration with Tom Jones on the 2000 hit "Sex Bomb", from Jones' 1999 album Reload.
Mousse T. is one of the first producers of house music in his country, alongside contemporaries Boris Dlugosch, DJ Tonka and Ian Pooley.