Stev Theloke (born 18 January 1978 in Karl-Marx-Stadt) is a professional swimmer from Germany, who won two bronze medals at the 2000 Summer Olympics. He did so in the 4×100 metres medley relay and in the 100 metres backstroke.
Theloke missed the 2004 Summer Olympics due to injury, and he was expelled from the German team for the 2005 World Aquatics Championships after he criticised his own swimming federation in an interview.