Agivey Monastery was an early monastic site in Northern Ireland.Samuel Lewis, A Topographical Dictionary of Ireland: Volume 1 (S. Lewis and Company, 1849) page 595.

It was purportedly founded in the 7th century by Goarcus of Aghadowey. It subsequently became a dependency of the Abbey of St. Mary-de-la-Fonta, which was founded in 1172 and to which this district became a grange.ALL IRELAND SOURCES` NEWSLETTER Volume 3, No. 7, July 2001. Lewis, Samuel. "Agivey, a grange", A Topographical Dictionary of Ireland, 1837 The monastery was dissolved in 1604, and the land was granted to the Ironmongers’ Company of London.All Ireland Sources` Newsletter Volume 3, No. 7, July 2001.

The site is in the east of County Londonderry, south of Coleraine, close to the River Bann.

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