- Rosselmini, Gregorio Tommaso1
- Rossi, Giovanni de'1
- Rossi, Girolamo1
- Rossi, Girolamo de'2
- Rossi, Rosso1
- Royal houses1
- Rucellai, Donato1
- Rucellai, Filippo de'1
- Rucellai, Guglielmo de'1
- Rudra (Hindu deity)7
- Rueda family1
- Rueda, Baltasar de, active 1553-15691
- Rueda, Bernardino de, active 1553-15691
- Rueda, Luis de, active 1553-15691
- Rueda, Rodrigo de, active 1553-15691
- Rufardus1
- Ruffaldi, Domenico1
- Rufina, Saint, -approximately 2871
- Ruhāwī, Ḥusām al-Dīn, 14th cent. ʻUqūd al-jawāhir wa-durar al-mafākhir1
- Rules3