Patrick Michael Casey (born March 17, 1959) is an American college baseball coach who was the head coach for the Oregon State Beavers baseball team. He is best known for winning the 2006 College World Series for the Beavers' first-ever baseball National Championship. The following year, he led the Beavers to a repeat championship in the 2007 College World Series, the first unranked team in history to accomplish this feat. He retired from Oregon State after winning his third championship in the 2018 College World Series.