Claudia Ann Christian is an American actress, writer, singer, musician, and director.

She is most famous for her role as Commander Susan Ivanova on the science fiction television series Babylon 5. She left the series unexpectedly following the fourth season, when contract negotiations for the fifth and final season – aggravated by the possibility that there would not be one – broke down. . Before Babylon 5, Christian was best known for her feature film roles as a stripper possessed by an alien serial killer in The Hidden , a police department psychologist Susan Riley in Maniac Cop 2 and as model Hexina in Hexed . Always much admired amongst sci-fi fans for her physical characteristics, she posed nude for Playboy Magazine in October of 1999.