Marian may refer to:
- Marian (given name), people with the given name Marian
- Maid Marian, companion of Robin Hood
- Marian, an adjective for things relating to Gaius Marius
- Marian, an adjective for things relating to Mari people
- Marian Party, those Scots who remained loyal to Mary, Queen of Scots in the disputes following her deposition
- Marian, a village in Hîrtop Commune, Transnistria, Moldova
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