| Round Valley Airport | |
| Faa: | O09 |
| Type: | Public |
| Operator: | Mendocino County |
| Location: | Covelo, California |
| Elevation-F: | 1,434 |
| Elevation-M: | 437.1 |
| R1-Number: | 10/28 |
| R1-Length-F: | 3,670 |
| R1-Length-M: | 1,119 |
| R1-Surface: | Asphalt |
Round Valley Airport is a public airport located one mile (1.6 km) southwest of Covelo, serving Mendocino County, California, USA. The airport is mostly used for general aviation.
Round Valley Airport covers 110acres and has one asphalt paved runway (10/28) measuring 3,670 x 55 ft. (1,119 x 17 m).