The 1999 Arizona Wildcats baseball team represented the University of Arizona during the 1999 NCAA Division I baseball season. The Wildcats played their home games at Frank Sancet Stadium. The team was coached by Jerry Stitt in his 3rd season at Arizona. The Wildcats finished 33-23 overall and placed 3rd in the Pacific-10 with a 13-11 record - the only time during Coach Stitt's tenure they would finish above .500 in conference play. The 1999 season season marked the 1st time that the Pac-10 did not play in divisions, as Portland State's discontinuation of baseball following the 1998 season caused the Northern Division to shrink to only 3 members (compared to the Southern Division's 6).