Boneffe Abbey was, from the early 13th century until the end of the 18th century, a Cistercian monastery on the banks of the Mehaigne in what is now the municipality of Éghezée, Wallonia, Belgium. The abbot's residence, first built in the early 16th century and repaired in the 17th and 18th centuries, is now a listed building that is currently in use as a farmhouse.