Grandselve Abbey (French: Abbaye de Notre-Dame de Grandselve) was a Cistercian monastery in south-west France, at Bouillac, Tarn-et-Garonne. It was one of the most important Cistercian abbeys in the south of France.
Initially, in 1114, it was a Benedictine foundation set up by Gerald of Sales. It joined the Cistercian movement as a daughter house of Clairvaux Abbey in 1144 or 1145.
The abbey was suppressed during the French Revolution.
Coordinates: 43°51′22″N 1°08′17″E / 43.856°N 1.138°E