- Pérez, Diego, fl. 15741
- Regiomontanus, Joannes, 1436-14761
- Ripa, Cesare, fl. 16001
- Rolevinck, Werner, 1425-15021
- Salvini, Anton Maria, 1653-17291
- Sandys, George, 1578-16441
- Simson, Archibald, 1564-16281
- Soncinas, Benedictus1
- Sovereign (1694-1702: William III)1
- Spanheim, Ezechiel, 1629-17101
- Sylburg, Friedrich, 1536-15961
- Tartaglia, Niccolò, d. 15571
- Taylor, C.1
- Taylor, Edgar, 1793-1839, ed. and tr.1
- Thevet, André, 1502-15901
- Thomas, à Kempis, 1380-14711
- Torresanus, Andreas, de Asula, 1451-15291
- Tymme, Thomas, d. 16201
- Valverde de Amusco, Juan, ca. 1525-ca. 15881
- Wace, ca. 1100-ca. 11751