Parentless Concepts
- report
- Raphelengii Glossarium latino Arabicum
- Raphelengius, Franciscus
- Rath
- Rath, Hieronymus Arnold
- Rath, Kaspar
- Rattes, Johannes
- Rayd, Hieronymus
- Razi
- Redeius, Franciscus
- Rederer
- Redzenberger
- Refutations of the Qur'an
- Regensburg
- Reginaldus, Nicolaus
- Regino of Prüm
- Regino of Prüm, De synodalibus causis et disciplinis ecclesiasticis
- region free
- Reichel, Servatius
- Reihen, Conradus
- Remus Quietanus, Johannes
- Remus, Georg
- Remy, Nicolas
- Represented object