| 1971 U.S. Clay Court Championships | |
|---|---|
| Date | August 16–22 |
| Edition | 3rd |
| Category | Grand Prix (Group B) |
| Draw | 64S / 32D |
| Surface | Clay / outdoor |
| Location | Indianapolis, Indiana United States |
| Champions | |
| Men's singles | |
 Željko Franulović [1] | |
| Women's singles | |
 Billie Jean King | |
| Men's doubles | |
Željko Franulović /  Jan Kodeš [2] | |
| Women's doubles | |
 Judy Dalton / Billie Jean King | |
The 1971 U.S. Clay Court Championships was a combined men's and women's tennis tournament that was part of the 1971 Grand Prix circuit and categorized as a Group B event. The event was held in Indianapolis in the United States and played on outdoor clay courts. It was the third edition of the tournament in the Open Era and was held in from August 16 through August 22, 1971. Željko Franulović and Billie Jean King won the singles titles. [3]