| Date: | August 12–18 |
| Edition: | 6th |
| Category: | Grand Prix (Group B) |
| Prize Money: | $50,000 |
| Draw: | 32S / 16D |
| Surface: | Hard / outdoor |
| Location: | Grove City, Columbus, Ohio, United States |
| Venue: | Buckeye Boys Ranch |
| Champs: |  Vijay Amritraj[1] |
| After Name: | Buckeye Tennis Championships |
| Main Name: | Columbus Open |
The 1975 City National Buckeye Championships was a men's tennis tournament played on outdoor hard courts at the Buckeye Boys Ranch in Grove City, Columbus, Ohio in the United States that was part of Group B category of the 1975 Grand Prix circuit. It was the sixth edition of the tournament and was held from August 12 through August 18, 1975. Fourth-seeded Vijay Amritraj won the singles title and earned $9,000 first-prize money.[2]
Vijay Amritraj defeated 
Bob Lutz 6–4, 7–5
Bob Lutz / Stan Smith defeated Jürgen Fassbender / Hans-Jürgen Pohmann 6–2, 6–7, 6–3