The 1974 U.S. Clay Court Championships was a combined men's and women's tennis tournament held in Indianapolis, Indiana in the United States and played on outdoor clay courts.

It was part of the men's Grand Prix and women's International Grand Prix.

It was the 6th edition of the tournament and was held from August 5 through August 12, 1974.

First-seeded Jimmy Connors won the men's singles title and accompanying $16,000 prize money while Chris Evert took the women's title.

[3][4] Jimmy Connors defeated Björn Borg 5–7, 6–3, 6–4 Chris Evert defeated Gail Chanfreau 6–0, 6–0 Jimmy Connors / Ilie Năstase defeated Jürgen Fassbender / Hans-Jürgen Pohmann 6–7, 6–3, 6–4 Gail Chanfreau / Julie Heldman defeated Chris Evert / Jeanne Evert 6–3, 6–1