Stefan Andrew Karsay
- Bats Right, Throws Right
- Height 6' 3", Weight 210 lb.
- High School Christ the King Regional High School
- Debut August 17, 1993
- Final Game June 17, 2006
- Born March 24, 1972 in Flushing, NY USA
Steve Karsay originally signed a letter of intent with Louisiana State University prior to being selected 22nd overall drain the 1990 amateur draft and being handed a $325,000 signing bonus by the Toronto Blue Jays. Once in the minors, Karsay appeared in only 5 games (23 innings with an ERA of 0.79) for the St. Catharines Blue Jays in 1990 before being named the New York-Penn League's best pitching prospect.
Karsay was pitching coach of the AZL Indians in 2012, Lake County Captains in 2013, Carolina Mudcats in 2014, Lake County again in 2015, and Columbus Clippers in 2016-2018. In 2019, he got his first major league coaching job as bullpen coach of the Milwaukee Brewers. In 2013 he also served as the pitching coach for the Surprise Saguaros of the Arizona Fall League.