1998 Arizona Wildcats baseball team

The 1998 Arizona Wildcats baseball team represented the University of Arizona during the 1998 NCAA Division I baseball season. The Wildcats played their home games at Frank Sancet Stadium. The team was coached by Jerry Stitt in his 2nd season at Arizona. The Wildcats finished 33-23 overall and placed 4th in the Pacific-10's Southern Division with a 12–18 record. This season marked the last time that the Pac-10 played in divisions, as Portland State's discontinuation of baseball following the season led to their elimination. Arizona missed the postseason for the 5th consecutive season, surpassing the previous record of 4 consecutive seasons from 1981 to 1984. This remains the longest postseason drought in program history.

Previous season
The Wildcats finished the 1997 season with a record of 32-26 and 13–17 in conference play, finishing 5th in the "Six-Pac" (Pac-10 Southern). Arizona missed the postseason for the 4th straight season.