| [A3398] | Galeazzo Maria Sforza (24 January 1444 - 26 December 1476) | person | represented actor |
| [A3394] | Gian Galeazzo Sforza (20 June 1469 - 21 October 1494) | person | represented actor |
| [A3389] | Ludovico Maria Sforza (27 July 1452 - 27 May 1508) | person | represented actor |
| [A3388] | Maximilian Sforza (25 January 1493 - 25 May 1530) | person | represented actor |
| [A3045] | George Shaw (10 December 1751 - 22 July 1813) | person | |
| [A2531] | Wojciech Siarkowski (ca 1706 - ca 1749) | person | printer |
| [A2074] | Dionysius Sibenbürger (ca 1502 - 1553) | person | author |
| [A938] | Petrus Sickius (20 January 1530 - 1588) | person | author |
| [A1691] | Henry Sidney (1529 - 5 May 1586) | person | |
| [A148] | Anna Siebeneicher (died 1610) | person | author, dedicator, printer, represented actor |
| [A49] | Jakub Siebeneicher (ca 1556 - 1604) | person | printer, represented actor |
| [A48] | Mateusz Siebeneicher (died 1582) | person | printer, represented actor |
| [A892] | Johann Siebmacher (1561 - 23 March 1612) | person | printer, printmaker |
| [A2678] | Jakub Sieneński (1568 - 1639) | person | dedicator, represented actor |
| [A803] | Marcin Siennik (died 1588) | person | compiler, translator |
| [A1197] | Sigismund, Holy Roman Emperor (15 February 1368 - 9 December 1437) | person | represented actor |
| [A650] | Sigismund I of Poland (1 January 1467 - 1 April 1548) | person | author, dedicatee, recipient, represented actor |
| [A343] | Sigismund II Augustus of Poland (1 August 1520 - 7 July 1572) | person | author, dedicatee, represented actor |
| [A257] | Sigismund III of Poland (20 June 1566 - 30 April 1632) | person | dedicatee, printer, recipient, represented actor |
| [A1712] | Sigismund Kęstutaitis (ca 1365 - 20 March 1440) | person | represented actor |
