Title
- Recipes and extracts on alchemy, medicine, metal-working, cosmetics, veterinary science, agriculture, wine-making, and other subjects1
- Register1
- Register of writs1
- Registro del peage d'Arle1
- Registrum alphabeticum1
- Registrum ordinis Cysterciensis1
- Regle et maniere de vivre1
- Regulae1
- Regulations for monks1
- Religiosorum status triplex1
- Republic1
- Rerum suo tempore gestarum commentarius1
- Responsa1
- Rich man and Lazarus1
- Risālah fī masʼalat al-kafāʼah1
- Roman ceremonials1
- Roman de Mandevie1
- Roman law1
- Romuleon1
- Rosarium1