Sioux Center
- Country: United States
- State: Iowa
- Population: 7,501 (2016)
- Latitude: 43° 4.8' N (43.07971°)
- Longitude: 96° 10.5' W (-96.17558°)
- Elevation: 446 m/1,463 ft. above sea level
- Time zone: America/Chicago (UTC -06:00); DST observed (UTC -05:00)