Petersburg
- Country: United States
- State: Virginia
- Population: 31,882 (2016)
- Latitude: 37° 13.7' N (37.22793°)
- Longitude: 77° 24.1' W (-77.40193°)
- Elevation: 22 m/72 ft. above sea level
- Time zone: America/New_York (UTC -05:00); DST observed (UTC -04:00)
- Alternate names: Appamatuck, Cockade City, Fals, Fort Henry, Peters Point, Peter's Point, Petersburgh, The Cockade City