The 1989 Pacific-10 Conference men's basketball tournament was played March 9–12 at the Great Western Forum in Inglewood, California.
Like the previous year, both top seeds advanced to the final; Stanford made its first appearance in the title game and met the top-seeded (and top-ranked) Wildcats.
Comfortably repeating as champion of the tournament was Arizona, which received the Pac-10's automatic bid to the NCAA tournament.
Repeating as the Most Outstanding Player was Sean Elliott of Arizona.
[2][3][4] This was the tournament's third edition and all ten teams participated.