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- La Ramée Abbey (Abbaye de la Ramée) (extant) at Jauchelette, Jodoigne (Walloon Brabant): Cistercian nuns
- Renaix Abbey (Abbaye Saint-Pierre et Saint-Paul de Renaix) at Ronse (East Flanders): Benedictine monks
- Robermont Abbey (Abbaye de Robermont) at Robermont (Liège): Cistercian nuns
- Rochefort Abbey or St. Rémy's Abbey, Rochefort (Abbaye Notre-Dame de Saint-Rémy) (extant) at Rochefort (Namur): Cistercian nuns to 1464, then Cistercian monks, then Trappist monks
- Roeulx Abbey (Abbaye Saint-Feuillien du Roeulx) at Le Roeulx (Hainaut): Premonstratensians
- Ten Roosen Abbey (Abdij Ten Roosen) at Aalst (East Flanders): Cistercian nuns
- Roosendael Abbey (Abdij van Roosendael) at Sint-Katelijne-Waver (Antwerp): Cistercian nuns
- Rothem Abbey (Abdij van Rothem) at Haelen (Limburg): Cistercian nuns
Read more about this topic: List Of Christian Religious Houses In Belgium