In Index of Names

• al-Rāḍī (Abū l-ʿAbbās Aḥmad [Muḥammad] b. al-Muqtadir, regn. 322–329/934–940), Abbasid caliph 428
• al-Rāġib al-Iṣfahānī (Abū l-Qāsim al-Ḥusayn b. Muḥammad b. al-Mufaḍḍal, 5th/11th cent.) 326, 404
• Ramón Martí (d. 1285) 412
• Ranking, George S. A. 392
• Rashed, Marwan 452, 460, 585–586
• Rashed, Roshdi 175, 201
• al-Rayḥānī, ʿAlī b. ʿUbayda (d. 234/819) 329, 665
• al-Rāzī, Abū Bakr (Muḥammad b. Zakariyyāʾ, d. 313/925) 17, 51, 62, 225, 236–237, 245, 331, 381–412, 440–441, 468, 479, 488, 571, 587, 743
• al-Rāzī, Abū Ḥātim (Aḥmad b. Ḥamdān al-Layṯī, d. 322/934) 390, 392, 396, 407–408,…