- Regula (Augustine, of Hippo, Saint)1
- Regula (Benedict, Saint, Abbot of Monte Cassino)1
- Religious life1
- Reproduction1
- Resurrection1
- Resurrection of Jesus Christ1
- Rhetoric, Ancient1
- Rhetoric, Medieval1
- Rhetoric--Study and teaching1
- Rhetorica ad Herennium1
- Rites and ceremonies1
- Roman Civil War (Rome : 43-31 B.C.)1
- Roman law1
- Romances, Latin (Medieval and modern)1
- Rome (Italy). Maestri delle Strade1
- Sacraments1
- Scholasticism1
- Scores1
- Seneca, Lucius Annaeus, approximately 4 B.C.-65 A.D.1
- Sermons, English (Middle)1