- Rolle, Richard, 1290?-13492
- Rowlandson, Thomas, 1756-1827, printmaker2
- Sacro Bosco, Joannes de, active 12302
- Sanson, Nicolas, 1600-16672
- Seuse, Heinrich, 1295-13662
- Turmeda, Anselm, 1352-1432?2
- Usuard, -876 or 8772
- قمولي، أحمد بن محمد، 1255 or 1256-1327, author2
- ܒܪ ܥܒܪܝܐ، 1226-12862
- Abelard, Peter, 1079-11421
- Abū Shujāʻ al-Iṣfahānī, Aḥmad ibn al-Ḥusayn, approximately 1042- author1
- Agnese, Battista, active 16th century1
- Aḥmad bin ʻAlī Saʻīd, -17171
- Ainslie, John (Surveyor)1
- Alagona, Arthelouche de.1
- Albanesi, Angelo, printmaker1
- Albertano, da Brescia, active 13th century1
- Alberti, Petrus1
- Albertus, Magnus, Saint, 1193?-12801
- Alessandro degli Angeli1
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