| Durand de Bredon - Abbé and Bishop of Toulouse | Reformer of the abbey, builder of the church (1063). |
| Ansquitil - Abbé (1085–1108) | Sponsor of the cloister completed in 1100. |
| Roger (le Bienheureux) - Abbé (1115–1131) | Initiator of the pumpkin and tympanum. |
| Urbain II - Pope | Consecrate the high altar in 1097. |
| Aristide Cavaillé-Coll - Organ factor | Reconstructed the organ in 1863. |
| Viollet-le-Duc - Architect | Restore the abbey in the 19th century. |