Sven Helge Hamrin (30 March 1941 – 25 January 2018) was a Swedish cyclist who competed in the 1964 Olympics. He finished 50th in the individual road race and won a bronze medal in the team time trial, riding with the FÃÂ¥glum brothers. The same year, he won the road race at the national championships.
In 1970, he was involved in an auto accident in Norway, as a result of which he remained in a coma for 40 days. Eventually, he recovered and resumed cycling, even though one of his legs was seven centimeters shorter as a result of multiple surgeries.