Heinz Frei (born 28 January 1958) is a Swiss wheelchair athlete. Frei has had a long career of racing, winning the London Marathon wheelchair race three times, and earning five medals at the 2003 European games at the age of 45. He has earned 15 gold medals at the summer and winter Paralympics and is a current world record holder in the marathon wheelchair race. He competed in athletics at every Summer Paralympic Games from 1984 to 2008, and at the 2008, 2012 and 2016 Summer Olympics he competed in cycling, using a handcycle. At the Winter Paralympics, he competed in cross-country sit-skiing between 1984 and 2006 and in the biathlon in 1994.