| Sfântu Gheorghe | Sfântu Gheorghe | Romania, Sfântu Gheorghe | 1890-05-09 | 2012-03-30 | 1890–2012 | 4 | |
| Sepsiszentgyörgyi Állami Magyar Színház | Sepsiszentgyörgyi Állami Magyar Színház | Romania, Sfântu Gheorghe | 1965-04-01 | 1965-07-06 | 1965 | 1 | |
| Satu Mare | Satu Mare | Romania, Satu Mare | 1899-01-12 | -- | 1899–2008 | 6 | |
| Sânpetru Mic | Sânpetru Mic | Romania, Sânpetru Mic | -- | -- | | | |
| Sânpetru | Sânpetru | Romania, Sânpetru | -- | -- | | | |
| Sânnicolau Mare ( Großsanktnikolaus) | Sânnicolau Mare ( Großsanktnikolaus) | Romania, Sânnicolau Mare ( Großsanktnikolaus) | -- | -- | | | |
| Sânmihaiu German | Sânmihaiu German | Romania, Sânmihaiu German | -- | -- | | | |
| Sânmihaiu de Câmpie | Sânmihaiu de Câmpie | Romania, Sânmihaiu de Câmpie | -- | -- | | | |
| Sălişte | Sălişte | Romania, Sălişte | -- | -- | | | |
| Săcuieni | Săcuieni | Romania, Săcuieni | -- | -- | | | |
| Săcelu | Săcelu | Romania, Săcelu | -- | -- | | | |
| Săbed | Săbed | Romania, Săbed | -- | -- | | | |
| Săsar | Săsar | Romania, Recea | -- | -- | | | |
| Szigligeti Színház Nagyvárad | Szigligeti Színház Nagyvárad | Romania, Oradea, Piaţa Regele Ferdinand I, 6 | 2020-09-24 | -- | 2020 | 1 | |
| Şerbăneşti | Şerbăneşti | Romania, Nenciuleşti | -- | -- | | | |
| Societatea pentru învăţătura poporului român | Societatea pentru învăţătura poporului român | Romania, Iaşi | 1895-05-25 | 1895-06-05 | 1895 | 1 | |
| Stadttheater Hermannstadt | Stadttheater Hermannstadt | Romania, Hermannstadt (Sibiu) | 1901-11-25 | 1912-03-29 | 1901–1912 | 13 | |
| Sala Palatului | Sala Palatului | Romania, București, Strada Ion Câmpineanu 28 | 2008-11-07 | -- | 2008–2025 | 2 | |
| Sala Liedertafel | Sala Liedertafel | Romania, Bucharest | 1901-06-01 | 1903-- | 1901–1924 | 8 | |
| Studioul de teatru sala Ion Cojar | Studioul de teatru sala Ion Cojar | Romania, Bucharest | 2011-02-19 | 2011-04-10 | 2011 | 1 | |
| Sala Camil Petrescu | Sala Camil Petrescu | Romania, Bucharest | 1998-01-17 | -- | 1998 | 1 | |
| Stana | Stana | Romania, Almaşu | -- | -- | | | |
| São Luiz Teatro Municipal | São Luiz Teatro Municipal | Portugal, Lisboa, Rua António Maria Cardoso 38 | 2010-09-16 | 2025-05-10 | 2010–2025 | 3 | |
| Stadttheater Breslau | Stadttheater Breslau | Poland, Wrocław (Breslau) | 1890-10-14 | -- | 1890–1905 | 3 | |
| Schauspielhaus Breslau | Schauspielhaus Breslau | Poland, Wrocław | 1913-06-02 | 1913-06-28 | 1913 | 7 | |
| Scena przy Wierzbowej im. Jerzego Grzegorzewskiego | Scena przy Wierzbowej im. Jerzego Grzegorzewskiego | Poland, Warsaw, ul. Wierzbowa 3 | 2006-04-21 | 2009-06-10 | 2006–2009 | 4 | |
| Skansen Centralnego Muzeum Włókiennictwa | Skansen Centralnego Muzeum Włókiennictwa | Poland, ul. Piotrkowska 282 | 2014-09-11 | 2014-09-19 | 2014 | 1 | |
| Szczeciński Teatr Pantomimy | Szczeciński Teatr Pantomimy (Pantomime Theatre Szczecin) | Poland, Szczecin, Korsarzy 2 | 1995-05-05 | -- | 1995 | 1 | |
| Stadttheater Stettin | Stadttheater Stettin | Poland, Szczecin | 1878-- | -- | 1878–1937 | 11 | |
| Świdnicki Ośrodek Kultury | Świdnicki Ośrodek Kultury | Poland, Świdnica, Rynek 43 | 2016-09-25 | 2016-09-26 | 2016 | 1 | |
| Świdnicki Ośrodek Kultury | Świdnicki Ośrodek Kultury | Poland, Świdnica, Rynek 43 | -- | -- | | | |
| Stadttheater Stargard in Pommern | Stadttheater Stargard in Pommern | Poland, Stargard Szczeciński | 1878-- | -- | 1878 | 1 | |
| Sosnowiec | Sosnowiec | Poland, Sosnowiec | 1908-09-25 | -- | 1908–1918 | 4 | |
| Sopot | Sopot | Poland, Sopot | 1923-- | -- | 1923 | 1 | |
| Stadttheater Stolp | Stadttheater Stolp | Poland, Słupsk | 1931-10-12 | -- | 1931 | 1 | |
| Skolimów | Skolimów | Poland, Skolimów | -- | -- | | | |
| Sieradz | Sieradz | Poland, Sieradz | 1918-02- | -- | 1918 | 1 | |
| Stadttheater Ratibor | Stadttheater Ratibor | Poland, Ratibor / Racibórz | 1928-03-18 | -- | 1928 | 1 | |
| Sala Sokoła | Sala Sokoła | Poland, Przemyśl | 1910-05-01 | -- | 1910–1912 | 2 | |
| Stadttheater Posen | Stadttheater Posen | Poland, Poznań | 1889-12-02 | 1900-02-19 | 1889–1900 | 3 | |
| Sala Stowarzyszenia Rzemieślników | Sala Stowarzyszenia Rzemieślników | Poland, Piotrków | 1918-02-06 | -- | 1918 | 1 | |
| Stadttheater Neiße | Stadttheater Neiße | Poland, Neiße (Neisse), Nysa | 1930-09-30 | -- | 1930–1942 | 2 | |
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