| Space Productions | Space Productions | 2010 – 2011 | 2 | |
| Svenska Teatern - Inhemska afdelningen | Svenska Teatern - Inhemska afdelningen | 1916 | 2 | |
| Skien International Ibsen Conference 2010 | Skien International Ibsen Conference 2010 | 2010 | 2 | |
| Svenska Riksteatern - Orebroensemblen | Svenska Riksteatern - Orebroensemblen | 1969 | 2 | |
| South Asia Theatre Festival | South Asia Theatre Festival | 2006 | 2 | |
| Skandinaviska Gästspelsturneen, Den | Den Skandinaviska Gästspelsturneen | 1890 | 2 | |
| Studentteateret Immaturus | Studentteateret Immaturus | 2006 – 2025 | 2 | |
| SMU-Meadows School of the Arts. Division of Theatre | SMU-Meadows School of the Arts. Division of Theatre | 2003 – 2005 | 2 | |
| Samina Peerzadas Ensemble | Samina Peerzadas Ensemble | 1992 – 1994 | 2 | |
| Stabile Mobile | Stabile Mobile | 2014 | 2 | 2 |
| Studentersamfundets Interne Teater | Studentersamfundets Interne Teater | 1994 – 2006 | 2 | |
| Scuola di Scenografia dell’Accademia di Belle Arti di Brera | Scuola di Scenografia dell’Accademia di Belle Arti di Brera | 2018 | 2 | |
| Städtische Bühnen Frankfurt am Main | Städtische Bühnen Frankfurt am Main | 1937 | 2 | |
| State Opera of Tatarstan, The | The State Opera of Tatarstan (Musa Džalil Tatar theatre of opera and ballet) | 2003 – 2005 | 2 | |
| Statens Kunstfond | Statens Kunstfond (Danish Arts Foundation) | 2024 | 2 | |
| Stone & Wings | Stone & Wings | 2006 | 1 | |
| Saint Sebastian Players | Saint Sebastian Players | 2024 | 1 | |
| Shunjuza | Shunjuza | 1922 | 1 | |
| Speilbilder Teater | Speilbilder Teater | 2011 | 1 | |
| Secret House | Secret House | 2024 | 1 | |
| Snow College Performing Arts | Snow College Performing Arts | 2025 | 1 | |
| Storsjöyran-festivalen | Storsjöyran-festivalen | 2000 | 1 | |
| Shingekisha | Shingekisha | 1914 | 1 | |
| Scriblers Dramatic Society, The | The Scriblers Dramatic Society | 1885 | 1 | |
| SM Arte e Cultura | SM Arte e Cultura | 2024 | 1 | |
| Siena College | Siena College | 2023 | 1 | |
| Stavanger Teaters Orkester | Stavanger Teaters Orkester | 1946 | 1 | |
| SWAN - South West Actors Network | SWAN - South West Actors Network | 2007 | 1 | |
| Spolek divadelních ochotníků Tyl | Spolek divadelních ochotníků Tyl | 1911 | 1 | |
| Sixth Festival | The Sixth Festival | 2024 | 1 | |
| Sladký časy | Sladký časy (Sweet times) | 2023 | 1 | |
| Solarium Asbl | Solarium Asbl | 2022 | 1 | |
| Städtische Bühnen Hannover | Städtische Bühnen Hannover | 1949 | 1 | |
| São João National Theater | São João National Theater | 2021 | 1 | |
| Svend og Ellen Aggerholm Tourneen (Eyvind Kornbeck-Tourneen) | Svend og Ellen Aggerholm Tourneen (Eyvind Kornbeck-Tourneen) | 1915 – 1921 | 1 | |
| Staats-Oper Berlin | Staats-Oper Berlin | 1938 | 1 | |
| Sceneriet | Sceneriet | 2007 | 1 | |
| Schauspielensemble Anklam | Schauspielensemble Anklam | 1969 | 1 | |
| Scribblers Hongkong | Scribblers Hongkong | 2006 | 1 | |
| SISU Finalmente | SISU Finalmente | 2010 | 1 | |
| Spring Willow Society | Spring Willow Society | 1914 | 1 | |
| Städtische Bühnen Köln | Städtische Bühnen Köln | 1931 – 1932 | 1 | |
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