The 1977 U.S. Clay Court Championships was a tennis tournament that was part of the men's Grand Prix and women's Colgate Series circuits. It was held in Indianapolis in the United States and played on outdoor clay courts at the Indianapolis Racquet Club.[3] It was the 9th edition of the tournament in the Open Era and was held from August 8 through August 14, 1977. Second-seeded Manuel Orantes won the men's singles title and the accompanying $17,500 first-prize money.[4]
