Ex Drummer is a 2007 Belgian black comedy and rock music film directed and co-written by Koen Mortier, whose previous work was limited to television commercials. It is based on the 1994 book by Herman Brusselmans of the same name. While receiving mixed reviews at the time, it went on to become a cult film.

Herman Frans Martha Brusselmans is a Belgian novelist, poet, playwright and columnist. He lives in Ghent. He is one of the best-selling authors in Flanders, but controversial at the same time for his profane language and offensive comedy.