Mario Kummer is a retired track and road racing cyclist from East Germany, who represented his native country at the 1988 Summer Olympics in Seoul, South Korea. There he won the gold medal in the men's team time trial, alongside Uwe Ampler, Jan Schur and Maik Landsmann. He was a professional road cyclist from 1990 to 1998, and afterwards became a cycling manager, managing Astana for the 2007 racing year.