Bective Abbey (Irish: Mainistir Bheigthí) is a Cistercian abbey on the River Boyne in Bective, County Meath, Ireland. The abbey was founded in 1147, and the remaining (well-preserved) structure and ruins primarily date to the 15th century. The site, including a nearby car park, were purchased by the state in 2012, and are managed by the Office of Public Works. The abbey, including its early 13th century church, 15th century cloister, and 16th century tower, is a protected structure and recorded on the register of National monuments of Ireland.