Martin Reimer (born 14 June 1987) is a German former professional road bicycle racer, who rode professionally from 2008 to 2011 and from 2013 to 2015. In 2009 he was the unlikely winner of the German National Road Race Championship. In November 2011 he announced his early retirement from the sport of cycling. However, he changed his mind for the 2013 season and signed for team MTN–Qhubeka. He retired again after the 2015 season.