1975 U.S. Pro Indoor
| 1975 U.S. Pro Indoor | |
|---|---|
| Date | January 20–26 |
| Edition | 8th |
| Category | World Championship Tennis |
| Draw | 128S / 64D |
| Prize money | $115,000 |
| Surface | Carpet / indoor |
| Location | Philadelphia, PA, U.S. |
| Venue | Spectrum |
| Champions | |
| Singles | |
| Marty Riessen | |
| Doubles | |
| Brian Gottfried / Raúl Ramírez | |
The 1975 U.S. Pro Indoor was a men's WCT tennis tournament played on indoor carpet courts at the Spectrum in Philadelphia, Pennsylvania in the United States. It was the eighth edition of the tournament and was held from January 20 through January 26, 1975. Seventh-seeded Marty Riessen won the singles title.