| 1970 Western Championships | |
|---|---|
| Date | July 20–26 |
| Edition | 70th |
| Category | Grand Prix Circuit |
| Draw | 64S / 32D |
| Prize money | $25,000 |
| Surface | Clay / Outdoor |
| Location | Cincinnati, Ohio, US |
| Venue | Cincinnati Tennis Club |
| Champions | |
| Men's singles | |
 Ken Rosewall[1] | |
| Women's singles | |
 Rosie Casals | |
| Men's doubles | |
 Ilie Năstase / Ion Țiriac[2] | |
| Women's doubles | |
Rosie Casals /  Gail Chanfreau | |
The 1970 Western Championships, also known as the Cincinnati Open, was a combined men's and women's tennis tournament played on outdoor clay courts at the Cincinnati Tennis Club in Cincinnati, Ohio in the United States that was part of the 1970 Pepsi-Cola Grand Prix circuit. The tournament was held from July 20 through July 26, 1970. Ken Rosewall and Rosie Casals won the singles titles.[3][4]
