Title
- Relacion del comercio de las Indias1
- Relación del descubrimiento y conquista de los reinos del Perú1
- Relatione del stato di Milano1
- Relationi de diversi ambasciatori1
- Religious text1
- Religious texts1
- Report on Switzerland1
- Rhetoric text1
- Risālah bar usṭurlāb1
- Risālah fī al-barāhīn ʻalá masāʼil al-jabr wa-al-muqābalah1
- Risālah fī al-hayʼah al-falakīyah1
- Risālah fī al-ḥisāb1
- Risālah fī ʻilm al-hayʼah1
- Ritual1
- Riḥlah al-Nāṣirīyah1
- Roman ceremonials1
- Rozier des guerres1
- Rubaiyat1
- Rātib al-mahdī1
- Sabʻ samavāt li-sirr-i samāʼī1