Patsy Fagan (born 15 January 1951) is a retired Irish professional snooker player.
After winning the first UK championship in 1977 (when it was a non-ranking event), Fagan seemed destined for a long and successful professional career in the game, but he became affected a bout of the "yips". This illness made him reluctant to play shots with the rest when situations demanded it and hence struggled to live up to the potential it was believed he had. Although he remained a professional for many years, this problem continued, and he gave up the game far earlier (in 1989) than might have been expected.
Fagan is currently coach of the Harrow professional Alfred Burden, and is now a regular commentator for snooker coverage on Eurosport, particularly the 12 PTC events.