- Riccomanni, Jacopo1
- Riccomanni, Maria1
- Riccomanni, Simone1
- Ridolfi, Angiolo1
- Ripley, George, -1490?1
- Risaliti, Lena1
- Rites and ceremonies1
- Rituals (Liturgical books)1
- Robert, William1
- Roderick, King of the Visigoths, -711?1
- Roman de la rose (Guillaume, de Lorris)1
- Roman law--Interpretation and construction1
- Romances, Latin (Medieval and modern)1
- Romanesque1
- Rome (Italy). Maestri delle Strade1
- Romero family1
- Rondinelli, Vieri de'1
- Rosary1
- Rosselmini, Giovanni1
- Rosselmini, Gregorio Tommaso1