Christian Ulmen (born 22 September 1975 in Neuwied) is a German entertainer and actor.
Ulmen started his television career in 1996 as a video jockey on MTV Europe. He is known for his creative, and sometimes provocative, humour, which he displayed in TV shows such as "Unter Ulmen" or "Mein neuer Freund", the German adaptation of Channel 4's "My New Best Friend", and the award-winning TV series "Dr. Psycho − Die Bösen, die Bullen, meine Frau und ich". Ulmen has also appeared in leading roles in successful cinema productions including "Herr Lehmann" (2003), the screenplay "The Elementary Particles" (2006), based on Michel Houellebecq's novel of the same title, and Men in the City directed by Simon Verhoeven and released in October 2009.