1966–67 Washington State Cougars men's basketball team

The 1966–67 Washington State Cougars men's basketball team represented Washington State University for the 1966–67 NCAA college basketball season. Led by ninth-year head coach Marv Harshman, the Cougars were members of the Athletic Association of Western Universities (AAWU, Pac-8) and played their home games on campus at Bohler Gymnasium in Pullman, Washington.

The Cougars were 15–11 overall in the regular season and 8–6 in conference play, tied for second in the standings.

It was Washington State's first winning record in conference play in seventeen years.