Colin Lowth (born October 5, 1977, in Drogheda, County Louth) is a former Irish swimmer who represented Ireland at the 2000 Olympic Games.
Lowth swam for Cormorant Swimming Club who are based in Dublin.
His best event was the 200m Butterfly in which he broke many Irish Records and qualified for the 2000 Olympic Games in.
While in his final year in college, he quailifed for the Sydney 2000 Olympics on the 200m Butterfly.
Former Irish international swimmer Nick O' Hare was critical of Lowth's swim.