Author
- Rafaino Caresini1
- Ralph of Laon1
- Remigio dei Girolami1
- Republic of Venice1
- Ricardus, de Mediavilla, approximately 1249-1308?1
- Richard Carmarden1
- Richard II of England1
- Richard Maidstone1
- Richard Nykke1
- Richard of Middleton1
- Robert Holkot1
- Robert Kilwardby1
- Robert de Gretham1
- Robert de Sorbon1
- Robert of Gloucester1
- Rocca, Antonio1
- Rodrigo Sánchez de Arévalo1
- Roffredo Epifanio1
- Roger Bigod, 2nd Earl of Norfolk1
- Roger Waltham1