Hagnaby Abbey was an abbey and former priory in Hagnaby, Lincolnshire, England. It was one of nine Premonstratensian houses within the historical county. It was founded as a house for Premonstratensian canons around 1175, by Agnes, widow of Herbert de Orreby.[1] The priory was a dependency of Welbeck Abbey and named in honour of Saint Thomas the Martyr.[1]
It achieved its independence and abbey status in 1250,[2] and appears from surviving records to have been well run.[1]
Hagby Abbey was suppressed in 1536,[2] its last abbot being Edmund Toft.[1] It is an ancient scheduled monument.