Thomas Greiss (born January 29, 1986 in Füssen, West Germany) is a German professional ice hockey goaltender. He currently plays for the San Jose Sharks of the NHL. Greiss earned a spot on Team Germany for the 2006 Winter Olympics. At 20 years of age, he was the youngest goaltender in the tournament, and had a 35 save performance on 40 shots against Team Canada. For the 2009-10 season, Greiss will be the back-up goaltender for the San Jose Sharks.