Altus
- Country: United States
- State: Oklahoma
- Population: 19,163 (2016)
- Latitude: 34° 38.3' N (34.63813°)
- Longitude: 99° 20' W (-99.33398°)
- Elevation: 426 m/1,398 ft. above sea level
- Time zone: America/Chicago (UTC -06:00); DST observed (UTC -05:00)
- Alternate names: Frazier