- Religious literature, Italian1
- Religious poetry, Italian1
- Rent (Islamic law)1
- Responses (Music)1
- Resurrection1
- Resurrection (Islam)1
- Resurrection of Jesus Christ1
- Riddles, Persian1
- Rites and ceremonies1
- Rituals (Liturgical books)1
- Roderick, King of the Visigoths, -711?1
- Roman capitals (Lettering)1
- Roman de la rose (Guillaume, de Lorris)1
- Romances, Latin (Medieval and modern)1
- Rosary1
- Rosh ha-Shanah--Liturgy1
- Rubrics1
- Rupert, of Deutz, approximately 1075-11291
- Ruralia commoda (Crescenzi, Pietro de')1
- Sacraments1