Haydar Aşan (16 April 1906 – 29 February 1996) was a Turkish-American Olympic sprinter. He competed in the men's 4 × 100 metres relay at the 1928 Summer Olympics.^[1]

He also competed as a high jumper, pole vaulter, and professional football player. As a teenager he competed in local athletic championships and began amateur boxing. In 1924, at age 18 he joined the professional Fenerbahçe football team, a year later he changed to the Galatasaray football team and stayed there for ten years. In 1931 and 1932, Aşan won second place in the Balkan Athletics Championships.^[2] In 1933, he won first place, which was the first time in history Turkey won the gold medal in athletics at the Balkan Athletics Championships.^[2] In 1938, he moved to the United States and studied graduate school at Duke University. He played on the school's soccer team and became an American citizen.^[2] Haydar married an American veteran nurse and had two daughters.^[2]