Lavendon Abbey was a Premonstratensian abbey near Lavendon in Buckinghamshire, England.^[1]

The abbey was established by John de Bidun between 1154 and 1158 and dedicated to John the Baptist.^[2] Bidun's donations to the abbey, together with those of Sibyl de Aungerville, Ranulf Earl of Chester, Ralf de Bray and Richard de Beauchamp, were confirmed by Henry III in 1227.^[3] At this point the abbey's possessions included the churches of Lavendon and Lathbury in Buckinghamshire, Wootton in Northamptonshire, Shelton in Bedfordshire and Stow Bedon, Kirby Bedon and Thompson in Norfolk.^[4] However, a succession of unsuccessful legal actions caused the abbey to lose control of all but Lavendon and Lathbury, though they later acquired the churches of Brayfield, Ashton and Shotteswell.^[5]

The abbey was suppressed in 1536, as part of the first phase of the Dissolution of the Monasteries. At this point the inhabitants comprised 11 canons (9 priests and 2 novices) and 20 servants; its revenues were estimated at £79 13s 8d (equivalent to £49,629 in 2021^[6]).^[7] The last Abbot, William Gales, was granted a pension of £12 (equivalent to £7,474 in 2021^[6]).^[3]

Nothing is visible above ground of the original buildings of the abbey, but the surrounding earthworks, field system and the remains of two fish ponds are a scheduled monument.^[2]