The 1999–2000 Washington Huskies men's basketball team represented the University of Washington for the 1999–2000 NCAA Division I men's basketball season.

Led by seventh-year head coach Bob Bender, the Huskies were members of the Pacific-10 Conference and played their home games this season off campus at KeyArena in Seattle, Washington.

The Huskies were 10–20 overall in the regular season and 5–13 in conference play, tied for eighth in the standings.

Built over seventy years earlier in 1927,[2] Hec Edmundson Pavilion underwent a renovation this season and reopened in the fall of 2000.

Washington won just twice at KeyArena in Pac-10 play, a one-point upset of UCLA in early January,[3] and a four-point win over rival Washington State in March; in between, they lost seven consecutive home games.