Martin Grothkopp (born 21 June 1986) is a German bobsledder. He competed in the four-man event at the 2018 Winter Olympics, winning the gold medal.
He also represented Germany as a track and field sprinter, competing in the 4 ÃÂ 400 metres relay team at the 2009 World Championships in Athletics and winning 400 metres gold at the 2009 German Athletics Championships.