| Sierra, Julio, Luna | Julio Luna Sierra | Actor | 1956 | 1 | |
| Sierra, Nicolás, Luna | Nicolás Luna Sierra | Actor | 1956 | 1 | |
| Siess, Kevin | Kevin Siess | Actor | 2015 | 1 | |
| Sieveking, Alejandro | Alejandro Sieveking | Costume Designer, Director | 1973 | 2 | |
| Sieveking, Margot | Margot Sieveking | Actor | 1928 | 1 | |
| Sieverding, Katharina | Katharina Sieverding | Costume Designer | 1964 - 1965 | 1 | |
| Sievers , Ludwig | Ludwig Sievers | Mask Maker | 1956 | 1 | |
| Sievers, Horst Dieter | Horst Dieter Sievers | Actor | 1968 - 1972 | 2 | |
| Sievers, Kathrin | Kathrin Sievers | Director | 2017 - 2018 | 1 | |
| Sievers, Otto, | Otto Sievers | Actor | 1932 | 1 | |
| Sievers, Sigrid, | Sigrid Sievers | Actor | 1950 | 1 | |
| Sievert, Ludwig, | Ludwig Sievert | Designer | 1920 | 2 | |
| Sievertsen, Will | Will Sievertsen | Actor | 2016 | 1 | |
| Siewers, Christine, | Christine Siewers | Actor | 1861 | 1 | 1 |
| Siewert, Caroline | Caroline Siewert | Actor | 2013 | 1 | |
| Siewert, John | John Siewert | Actor | 2012 | 1 | |
| Siewert, Vicki | Vicki Siewert | Costume Designer | 1964 | 1 | |
| Siewierska, -, | - Siewierska | Actor | 1882 | 1 | |
| Sieyum, Mokenen | Mokenen Sieyum | Lighting Designer, Sound Designer | 2009 | 2 | |
| Siff, Maggie | Maggie Siff | Actor | 2005 | 1 | |
| Siffer, Cyrille | Cyrille Siffer | Lighting Designer | 2000 | 1 | |
| Sigaux, Gilbert | Gilbert Sigaux | Adaptation, Translator | 1962 - 1995 | 13 | |
| Sigaux, Henri | Henri Sigaux | Translator | 2007 | 10 | |
| Sigbjørnsen, Tor, | Tor Sigbjørnsen | Actor | 1985 | 2 | |
| Sigg, Carola | Carola Sigg | Actor | 2009 | 1 | |
| Sigg, Maximilian | Maximilian Sigg | Actor | 1971 | 2 | |
| Siggelkow, Bertha, | Bertha Siggelkow | Actor | 1898 | 1 | |
| Sigl, -, | - Sigl | Actor | 1889 | 1 | |
| Sigl, Mr.., | Mr.. Sigl | Actor | 1893 | 2 | |
| Sigl, Peter, | Peter Sigl | Actor, Director | 1893 | 3 | |
| Sigler, Amalie, | Amalie Sigler | Actor | 1889 | 2 | |
| Sigley, Dan | Dan Sigley | Actor | 2005 | 1 | |
| Sigley, Glenys | Glenys Sigley | Actor | 1989 | 1 | |
| Sigmond, Rita | Rita Sigmond | Actor | 2017 - 2019 | 9 | |
| Sigmund, Franjo | Franjo Sigmund | Mask Maker | 1952 | 1 | |
| Sigmund, Su | Su Sigmund | Costume Designer | 2006 - 2008 | 3 | |
| Signoret, -, | - Signoret | Actor | 1903 | 3 | |
| Sigrist, Andreas | Andreas Sigrist | Actor | 2006 - 2011 | 4 | |
| Sigrist, Ernst C. | Ernst C. Sigrist | Actor | 1995 | 1 | |
| Sigrist, Gundula | Gundula Sigrist | Costume Designer | 1973 | 1 | |
| Sigstad, Mari Vassdokken, | Mari Vassdokken Sigstad | Actor | 2005 - 2007 | 6 | |
| Sigurbjörnsson, Jón | Jón Sigurbjörnsson | Actor | 1962 | 3 | |
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