Sidney
- Country: United States
- State: Nebraska
- Population: 6,888 (2016)
- Latitude: 41° 8.6' N (41.14276°)
- Longitude: 102° 58.7' W (-102.97798°)
- Elevation: 1,246 m/4,088 ft. above sea level
- Time zone: America/Denver (UTC -07:00); DST observed (UTC -06:00)