Other
- MAG (cryptography), a stream cypher
- Madang Airport, which has the IATA code MAG
- MAG Technology Co., a company making computer display devices
- Mog (people), a secluded tribe in the Indian state of Tripura whose name is sometimes transliterated Mag
- Mag (Hungarian: Mág), a village in Sălişte town, Sibiu County, Romania
- a helpful, familiar-like companion robot in the game Phantasy Star Online
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