The 1979 U.S. Clay Court Championships was a men's Grand Prix and women's Colgate Series tennis tournament. The event was held for the first time at the newly built Indianapolis Sports Center in Indianapolis in the United States and played on outdoor clay courts. It was the 11th edition of the tournament in the Open Era and was held in from August 6 through August 12, 1979. First-seeded Jimmy Connors won the men's singles title and the $25,000 first-prize money.[1] [2] First-seeded Chris Evert-Lloyd claimed the women's singles title and $20,000 first-prize money.[3]
See main article: 1979 U.S. Clay Court Championships – Men's singles. 
Jimmy Connors defeated 
Guillermo Vilas 6–1, 2–6, 6–4
See main article: 1979 U.S. Clay Court Championships – Women's singles. Chris Evert-Lloyd defeated 
Evonne Goolagong Cawley 6–4, 6–3
See main article: 1979 U.S. Clay Court Championships – Men's doubles. Gene Mayer / John McEnroe defeated Jan Kodeš / Tomáš Šmíd 6–4, 7–6
See main article: 1979 U.S. Clay Court Championships – Women's doubles. Kathy Jordan / Anne Smith defeated Penny Johnson / Paula Smith 6–1, 6–0