| Seattle Repertory Playhouse | Seattle Repertory Playhouse | 1931 – 2022 | 6 | |
| Scuola di Scenografia dell’Accademia di Belle Arti di Brera | Scuola di Scenografia dell’Accademia di Belle Arti di Brera | 2018 | 2 | |
| Scuola di Musica Il Flauto Magico | Scuola di Musica Il Flauto Magico | 2024 | 4 | 2 |
| Scuola del Musical di Milano | Scuola del Musical di Milano (Milan's Musical School) | 2024 – 2025 | 4 | |
| Scriblers Dramatic Society, The | The Scriblers Dramatic Society | 1885 | 1 | |
| Scribblers Hongkong | Scribblers Hongkong | 2006 | 1 | |
| Scotland's National Young People's Theatre Festival | Scotland's National Young People's Theatre Festival | 2010 | 1 | |
| Schleswig-Holsteinisches Landestheater und Sinfonieorchester | Schleswig-Holsteinisches Landestheater und Sinfonieorchester | 1976 – 2002 | 12 | |
| Schauspielensemble Anklam | Schauspielensemble Anklam | 1969 | 1 | |
| Schauspiel Bonn | Schauspiel Bonn | 1987 – 2006 | 11 | |
| Schaubuhne am Lehniner Platz | Schaubühne am Lehniner Platz (Schaubuhne am Lehniner Platz) | 2002 – 2026 | 75 | |
| Scharoun-Theater Wolfsburg | Scharoun-Theater Wolfsburg | 2023 | 6 | |
| Sceneriet | Sceneriet | 2007 | 1 | |
| Scarlet Cup | Scarlet Cup Theatre | 2023 | 1 | |
| Satirikon | Satirikon (Satyricon) | 2001 | 1 | |
| São João National Theater | São João National Theater | 2021 | 1 | |
| Santa Cristina Centro Theatrical | Santa Cristina Centro Theatrical | 2011 | 1 | |
| Samuel Fröler | Samuel Fröler | 2010 | 1 | |
| Samina Peerzadas Ensemble | Samina Peerzadas Ensemble | 1992 – 1994 | 2 | |
| Sam Wanamaker Playhouse | Sam Wanamaker Playhouse | 2023 – 2024 | 1 | |
| Sala Muzeum Przemysłu i Rolnictwa | Sala Muzeum Przemysłu i Rolnictwa | 1899 | 1 | |
| Saint Sebastian Players | Saint Sebastian Players | 2024 | 1 | |
| Saiko Geijutsuza | Saiko Geijutsuza | 1924 | 1 | |
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