| [A848] | Jan Mikołaj Smogulecki (1610 - 17 September 1656) | person | dedicatee, represented actor |
| [A2438] | Snail-Marked Blockcutter | person | blockcutter |
| [A1868] | Grzegorz Snopek of Szamotuły (1485 - 1541) | person | adapter, author |
| [A2] | Società Tipografica bolognese | corporate actor | printer |
| [A3385] | Bartolomeo Socini (1436 - 1507) | person | represented actor |
| [A1570] | Socrates (469 BCE - 399 BCE) | person | represented actor |
| [A2517] | Jan Soens (ca 1547 - ca 1611) | person | draughtsman |
| [A216] | Jacek Sokolski | person | editor |
| [A778] | Stanisław Sokołowski (1537 - 1593) | person | author, editor |
| [A368] | Jan Dymitr Solikowski (1539 - 27 June 1603) | person | author, dedicatee, represented actor |
| [A2580] | Gaius Iulius Solinus (3rd c. AD) | person | author |
| [A276] | Virgil Solis (1514 - 1 August 1562) | person | designer, illustrator, printmaker |
| [A1541] | Solon (ca 630 BCE - ca 560 BCE) | person | represented actor |
| [A3355] | Abraham van Someren | person | printer |
| [A1598] | Johannes Sommerfeld (1457 - 1520) | person | author |
| [A161] | Michel Sonnius (fl. 1564 - ca 1588) | person | printer |
| [A1649] | Sophia Jagiellon, Margravine of Brandenburg-Ansbach (6 May 1464 - 5 October 1512) | person | represented actor |
| [A3288] | Sophie Amalie of Nassau-Siegen (10 January 1650 - 15 November 1688/25 November 1688) | person | represented actor |
| [A903] | Arnaud Sorbin de Sainte-Foi (ca 1532 - 1 May 1606) | person | author |
| [A3191] | Soter (fl. ca 167 - 174) | person | represented actor |
