1977–78 Washington Huskies men's basketball team

The 1977–78 Washington Huskies men's basketball team represented the University of Washington for the 1977–78 NCAA Division I men's basketball season. Led by seventh-year head coach Marv Harshman, the Huskies were members of the Pacific-8 Conference and played their home games on campus at Hec Edmundson Pavilion in Seattle, Washington.

The Huskies were 14–13 overall in the regular season and 6–8 in conference play, tied for fifth in the standings.