| Official Name: | Aïn Tine |
| Settlement Type: | Commune and town |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 300 |
| Subdivision Type: | Country |
| Subdivision Name: |  Algeria |
| Subdivision Name1: | Mila Province |
| Subdivision Type2: | District |
| Unit Pref: | Imperial |
| Population As Of: | 1998 |
| Population Total: | 6653 |
| Utc Offset: | +1 |
| Coordinates: | 36.3961°N 6.3222°W |
Aïn Tine or Aïn Tinn (formerly Belfort) is a town and commune in Mila Province, Algeria. At the 1998 census it had a population of 6653.[1] [2]
Under the Roman Empire, it was called Coeliana, perhaps after the name of the Coelii Maximi family,[3] and was part of the Roman province of Numidia.
Bishop Quodvultdeus of Coeliana was one of the Catholic bishops whom the Arian Vandal king Huneric summoned to Carthage in 484 and then exiled.[4] Pius Bonifacius Gams,[5]
No longer a residential bishopric, Coeliana is today listed by the Catholic Church as a titular see.[6]