San Jon
- Country: United States
- State: New Mexico
- Population: 201 (2016)
- Latitude: 35° 6.5' N (35.10756°)
- Longitude: 103° 19.7' W (-103.32856°)
- Elevation: 1,229 m/4,032 ft. above sea level
- Time zone: America/Denver (UTC -07:00); DST observed (UTC -06:00)