Wilkens was traded to the Seattle SuperSonics for Walt Hazzard and spent four seasons there. He averaged 22.4 points, 6.2 rebounds, and 8.2 assists per game in his first season for the SuperSonics, and was an All-Star in three of his seasons for them. He was named head coach in his second season with the team. Although the SuperSonics did not reach the playoffs while Wilkens simultaneously coached and started at point guard, their record improved each season and they won 47 games during the 1971–72 NBA season. Wilkens was dealt to the Cleveland Cavaliers before the start of the next season in a highly unpopular trade, and the SuperSonics fell to 26-56 without his leadership on the court.