Gaston, Baron Roelants (born 5 February 1937) was a top steeplechaser in the early 1960s and a great cross country runner. At the steeplechase he won the 1962 European and 1964 Olympic titles as well as setting two world records, 8 minutes 29.6 seconds in 1963 and 8 minutes 26.4 seconds in 1965.
Roelants was born in Opvelp, Belgium. He was 4th in the steeplechase at the 1960 Olympics, and after a bronze at the 1966 Europeans he turned with great success to longer distances, setting world records at the 20 km distance (58 minutes 6.2 seconds) and the 1 hour race (20,664 m) that year and later improving those records to 57 minutes 44.4 seconds and 20,878 meters in 1972. He won a silver (1969) and a bronze (1974) in European marathon races. He was the number 1 ranked steeplechaser in the world five times (1962–1965 and 1967).
He equalled the record by winning four international cross country titles (1962, 1967, 1969 and 1972) with three second places and in all nine top 10 placings between 1960 and 1975. His long career continued into his 40s and he won five world titles in his first year in masters' ranks and held the Masters world record in the steeplechase for 27 years.