| Washington County Airport | |
| Faa: | 8WC |
| Type: | Public |
| Owner: | Washington County |
| City-Served: | Potosi, Missouri |
| Elevation-F: | 959 |
| Coordinates: | 37.9292°N -90.7314°W |
| Pushpin Map: | USA Missouri#USA |
| Pushpin Mapsize: | 200 |
| Pushpin Map Caption: | Location of airport in Missouri |
| Pushpin Label: | 8WC |
| Pushpin Label Position: | left |
| R1-Number: | 2/20 |
| R1-Length-F: | 4,000 |
| R1-Surface: | Asphalt |
| Stat-Year: | 2011 |
| Stat1-Header: | Aircraft operations |
| Stat1-Data: | 1,040 |
| Stat2-Header: | Based aircraft |
| Stat2-Data: | 11 |
| Footnotes: | Source: Federal Aviation Administration[1] |
Washington County Airport is a county-owned, public-use airport in Washington County, Missouri, United States. It is located three nautical miles (6 km) east of the central business district of Potosi, Missouri,.
Washington County Airport covers an area of 120 acres (49 ha) at an elevation of 959 feet (292 m) above mean sea level. It has one runway designated 2/20 with an asphalt surface measuring 4,000 by 60 feet (1,219 x 18 m).
For the 12-month period ending June 30, 2011, the airport had 1,040 aircraft operations, an average of 86 per month: 96% general aviation, 3% air taxi, and 1% military. At that time there were 11 aircraft based at this airport: 82% single-engine and 18% ultralight.