1989–90 Idaho Vandals men's basketball team

1989–90 Idaho Vandals men's basketball
ConferenceBig Sky Conference
Record25–6 (13–3 Big Sky)
Head coach
Assistant coaches
Home arenaKibbie Dome
1989–90 Big Sky men's basketball standings
Conf. Overall
Team W   L   PCT W   L   PCT
Idaho 13 3   .813 25 6   .806
Eastern Washington 11 5   .688 18 11   .621
Montana 10 6   .625 18 11   .621
Nevada 9 7   .563 15 13   .536
Weber State 8 8   .500 14 15   .483
Montana State 8 8   .500 17 12   .586
Boise State 7 9   .438 12 15   .444
Northern Arizona 3 13   .188 8 20   .286
Idaho State 3 13   .188 6 21   .222
Conference tournament winner

The 1989–90 Idaho Vandals men's basketball team represented the University of Idaho during the 1989–90 NCAA Division I men's basketball season. Members of the Big Sky Conference, the Vandals were led by second-year head coach Kermit Davis and played their home games on campus at the Kibbie Dome in Moscow, Idaho.

The Vandals were 23–5 overall in the regular season and 13–3 in conference play, champions in the regular season standings. At the conference tournament in Boise, the Vandals earned a third consecutive bye into the semifinals, where they beat sixth seed Montana State by nine points. In the final against league runner-up Eastern Washington, Idaho's Ricardo Boyd sank a three-pointer as time expired to break a tie and give the Vandals a second consecutive NCAA berth.

Seeded thirteenth again in the West Regional, Idaho lost to Louisville by nineteen points in Salt Lake City in the first round. Davis left in late March for Texas A&M, and was succeeded by Larry Eustachy, a former fellow UI assistant in Tim Floyd's first season (1986–87).

This was Idaho's fourth appearance in the NCAA tournament in ten years, but remains its most recent.