Eilish McColgan (born 25 November 1990) is a British middle-distance athlete who competes in the 3000 metres steeplechase and 5000 metres. She represented Great Britain at the 2012 Olympic Games in London and the 2016 Olympic Games in Rio. She represented Scotland at the Commonwealth Games in Glasgow in 2014 and in 2018 at the Gold Coast. She is the Scottish record holder in the 3000 metres steeplechase with 9:35.82 in 2013.
McColgan was born in Dundee, Scotland to Liz and Peter McColgan, both athletes. She is a member of Dundee's Hawkhill Harriers Club and is coached by her mother, former 10,000 metres World Champion and Olympic silver medallist Liz McColgan.
In 2006, she won a silver medal at the Scottish Schools Championships in the 1500 metres and a bronze medal at the International Under-17s Schools Championships. In 2007, she came fifth in the Scottish Senior Championships 1500 metres. At the 2008 Scottish Indoor Championships she won a bronze medal in the 1500 metres.