Kostas Sommer (Greek: ??sta? S?µµe?; born 17 May 1975) is a Greek/German model, actor, and television host who has appeared in numerous movies and TV shows.
In 2005, he appeared in the Hollywood film Deuce Bigalow: European Gigolo starring Rob Schneider, as the Greek gigolo Assapopoulos Mariolis.
The role was Sommer's first Hollywood role, after his only audition since arriving in Los Angeles.