An altar is a religious structure for sacrifices or offerings.
Altar may also refer to:
Arts and entertainment
- Altar (album), a 2006 album by Sunn O))) and Boris
- Altar (Brazilian band), a dance music band
- Altar (Dutch band), a death metal band
- Altar (film), 2014 film also released as The Haunting of Radcliffe House
- Altar (Romanian band), a metal band
- The Altar, a 2016 album by Banks
- "The Altar" (poem), a 17th-century poem by George Herbert
- "The Altar", a 1989 Christian song by Ray Boltz
- "Altar", a song by Kehlani from Blue Water Road, 2022
Places
- Altar Municipality, a municipality in Sonora, Mexico
- Altar, Sonora, a city in Altar Municipality
- El Altar, an extinct volcano in Ecuador
- The Altar (rock), rock summit in Queen Maud Land of Antarctica
- The Altar, or Ara, a constellation