The 1980 WCT Tournament of Champions was a men's tennis tournament played on outdoor clay courts at the West Side Tennis Club in Forest Hills, Queens, New York City in the United States and part of the 1980 Grand Prix circuit. It was the fourth edition of the tournament and was held from May 5 through May 11, 1980. Third-seeded Vitas Gerulaitis won the singles title.
Vitas Gerulaitis defeated John McEnroe 2–6, 6–2, 6–0
Peter Fleming / John McEnroe defeated 
Peter McNamara/ Paul McNamee 6–2, 5–7, 6–2