Colin Robert Reitz (born 6 April 1960) is a male English former track athlete who competed mainly in the 3000 metres steeplechase.

Born in London, Reitz competed at the 1980 Moscow Olympics, where he was eliminated in the semifinals.

[1] In 1983, he won the AAAs title, and went on to win the bronze medal in the 3000m steeplechase at the inaugural World Championships in Helsinki.

In July 1986, he won a bronze medal at the Commonwealth Games in Edinburgh, Scotland,[2] before finishing fourth at the European Championships in August.

His final major competition was the 1987 World Championships, where he was eliminated in the heats.