Pat O'Brien
Pat O'Brien (15 december 1968) is ne gitarist van den Amerikoansn deathmetalband Cannibal Corpse. O'Brien kwam by Cannibal Corpse in 1997 ter vervangienge va gitarist Rob Barrett. Ie speelde up de albums Gallery of Suicide, Bloodthirst, Gore Obsessed, Worm Infested, The Wretched Spawn, Kill en Evisceration Plague.
Ie wos gitarist by Nevermore (1994-1996) en speelde wok by Ceremony en Monstrosity.