1980 ATP Championship
| 1980 Cincinnati Open | |
|---|---|
| Date | August 18–24 |
| Edition | 80th |
| Draw | 64S / 32D |
| Prize money | $200,000 |
| Surface | Hard / outdoor |
| Location | Mason, Ohio, U.S. |
| Venue | Lindner Family Tennis Center |
| Champions | |
| Singles | |
 Harold Solomon | |
| Doubles | |
| Bruce Manson / Brian Teacher | |
The 1980 Cincinnati Open (also known as the 1980 ATP Championships for sponsorship reasons) was a tennis tournament played on outdoor hard courts at the Lindner Family Tennis Center in Mason, Ohio in the United States that was part of the 1980 Volvo Grand Prix. The tournament was held from August 18 through August 24, 1980.
Finals
Singles
Harold Solomon defeated 
Francisco González 7–6, 6–3
Doubles
Bruce Manson / Brian Teacher defeated 
Wojtek Fibak / 
Ivan Lendl 6–7, 7–5, 6–4