Coilin "Dook" Devlin (born 19 February 1985) is a Gaelic footballer who plays for the Derry county team, with whom he has won a National League title. He plays his club football for Ballinderry Shamrocks and has won two Derry Senior Football Championships with the club.
Devlin made his Derry Senior debut in 2005. He was part of the Derry panel that won the 2008 National League where Derry beat Kerry in the final.
Devlin has won Derry Championship medals with Ballinderry in 2006 and 2008.