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- Tamié Abbey (Abbaye Notre-Dame de Tamié), monks (Plancherine, Savoie)
- Tart Abbey, nuns, diocese of Langres
- Theuley Abbey (or Tulley Abbey), monks, diocese of Besançon, later Langres (Vars, Haute-Saône)
- Le Thoronet Abbey (Abbaye du Thoronet or Abbaye Notre-Dame du Thoronet), diocese of Fréjus, united in 1785 with the diocese of Digne (Le Thoronet, Var)
- Timadeuc Abbey (Abbaye Notre-Dame de Timadeuc or Thymadeuc), monks (from 1841) (Bréhan, Morbihan)
- La Trappe Abbey (Abbaye Notre-Dame de Trappe, Abbaye de la Grande-Trappe or Abbaye de Soligny), monks, diocese of Séez (Soligny-la-Trappe, Orne)
- Abbaye du Trésor Notre-Dame (Bus-Saint-Rémy, Eure)
- Trizay Abbey (Abbaye Sainte-Marie de Trizay, Abbaye du Gué de Trizay or de Trisay), diocese of Luçon (Saint-Vincent-Puymaufrais (1833–1972), now Bournezeau, Vendée)
- Trois-Fontaines Abbey, monks, diocese of Châlons-sur-Marne (Heiltz-le-Maurupt, Marne)
- Tyronneau Abbey, monks, diocese of Le Mans (1149-1790) (Saint-Aignan, Sarthe)
Read more about this topic: List Of Cistercian Monasteries In France