Author
- Prudentius1
- Pseudo-Cicero1
- Pseudo-Joachim of Fiore1
- Ptolemaeus Tancredius1
- Ptolemy1
- Qarajah Aḥmad1
- Qasem-e Anvar1
- Qazwīnī, Aḥmad ibn ʻAbd al-Awwal, d. 15581
- Qutb al-Din al-Shirazi1
- Qāsim ibn Yūsuf Abū Naṣrī Haravī1
- Ranieri Farnese1
- Ranuccio Farnese1
- Rashe Menaḥem be Yehoshuʻa, ha-Golah1
- Rasūl ibn Ṣāliḥ Āydīnī1
- Real Monasterio de Santa Clara1
- Regia Camera (Duchy of Milan)1
- Regiomontanus1
- Revanî1
- Richard Brooke1
- Richard Carmarden1