Mario Kummer, born on May 6, 1962, is a retired track and road racing cyclist from East Germany. He represented his native country at the 1988 Summer Olympics in Seoul, South Korea, where he won a gold medal in the men's team time trial alongside Uwe Ampler, Jan Schur, and Maik Landsmann. Following his amateur success, Kummer became a professional road cyclist, competing from 1990 to 1998.