Xenia Seeberg born on 4 April 1972 in Geldern, Germany is a German film and television actress. She is perhaps best known for her role as Xev Bellringer in the science fiction television series Lexx. In 2003 she married actor Sven Martinek. They have one son Philip-Elias born 2005. She is the lead singer of the band Vertikals. In April 2005, Seeberg appeared on the cover of the German edition of Playboy.

She was ranked 84 on the Maxim Hot 100 Women of 2001. Seeberg stands 173 centimetres 5 ft 8 in tall speaks German, English, and French; and has degrees in Latin and philosophy. Later she attended theater at the Lee Strasberg school.