René Tretschok (born 23 December 1968) is a German former professional footballer who played as a midfielder. As a player of Borussia Dortmund he was part of their Champions League victory in 1997. He scored an important goal in the semi final of their victorious campaign against Manchester United, giving Dortmund a crucial 1–0 lead going into the second leg. He was then rewarded with a place on the bench in the final, however he remained unused for the entire match.