1979–80 Washington Huskies men's basketball team

The 1979–80 Washington Huskies men's basketball team represented the University of Washington for the 1979–80 NCAA Division I men's basketball season. Led by ninth-year head coach Marv Harshman, the Huskies were members of the Pacific-10 Conference and played their home games on campus at Hec Edmundson Pavilion in Seattle, Washington.

The Huskies were 18–9 overall in the regular season and 9–9 in conference play, fifth in the standings. There was no conference tournament yet; it debuted seven years later.

This was Washington's first appearance in the National Invitation Tournament, they played UNLV in the first round and lost by twenty points. The Pac-8 did not allow participation in the NIT until 1973. The 1972 Huskies were 20–6 overall and 10–4 in conference, second in the standings; but stayed home for the postseason.

Postseason result
!colspan=6 style=| National Invitation Tournament