Smithfield
- Country: United States
- State: Utah
- Population: 11,146 (2016)
- Latitude: 41° 50.3' N (41.83826°)
- Longitude: 111° 50' W (-111.83272°)
- Elevation: 1,403 m/4,603 ft. above sea level
- Time zone: America/Denver (UTC -07:00); DST observed (UTC -06:00)