Author
- Pius IV1
- Pope1
- Porphyry1
- Proclus1
- Ptolemaeus Tancredius1
- Ptolemy1
- Qasem-e Anvar1
- Qazwīnī, Aḥmad ibn ʻAbd al-Awwal, d. 15581
- Qutb al-Din al-Safawi1
- Qāsim ibn Yūsuf Abū Naṣrī Haravī1
- Ranieri Farnese1
- Rashe Menaḥem be Yehoshuʻa, ha-Golah1
- Rasūl ibn Ṣāliḥ Āydīnī1
- Razi al-Din ibn al-Hanbali1
- Regiomontanus1
- Republic of Venice1
- Revanî1
- Richard Brooke1
- Richard Carmarden1
- Richard Robinson1