Calais
- Country: United States
- State: Maine
- Population: 2,965 (2016)
- Latitude: 45° 11.3' N (45.18896°)
- Longitude: 67° 16.7' W (-67.2786°)
- Elevation: 13 m/44 ft. above sea level
- Time zone: America/New_York (UTC -05:00); DST observed (UTC -04:00)
- Alternate names: Kallus