- Royal supremacy (Church of England)1
- Rucellai, Cosimo, 1495-15191
- Rucellai, Donato1
- Rucellai, Filippo de'1
- Rucellai, Guglielmo de'1
- Ruch, Georgius, fl. 1438-14411
- Rufardus1
- Ruffaldi, Domenico1
- Rupert, of Deutz, approximately 1075-11291
- Ruralia commoda (Crescenzi, Pietro de')1
- SS. Annunziata (Church : Florence, Italy)1
- SS. Trinità e S. Michele Arcangelo di Brondolo (Monastery)1
- Sacchetti, Angiolo1
- Sacramentaries1
- Saint-Bertin (Monastery : Saint-Omer, Pas-de-Calais, France)1
- Saint-Martin de Plaimpied (Augustinian Monastery)1
- Saint-Victor (Abbey : Paris, France)1
- Sainte-Chapelle (Paris, France)1
- Saints--Biography1
- Salignato, Lunghino di1