| Sânpetru Mic | Sânpetru Mic | Romania, Sânpetru Mic | -- | -- | | | |
| Satu Mare | Satu Mare | Romania, Satu Mare | 1899-01-12 | -- | 1899–2008 | 6 | |
| Sepsiszentgyörgyi Állami Magyar Színház | Sepsiszentgyörgyi Állami Magyar Színház | Romania, Sfântu Gheorghe | 1965-04-01 | 1965-07-06 | 1965 | 1 | |
| Sfântu Gheorghe | Sfântu Gheorghe | Romania, Sfântu Gheorghe | 1890-05-09 | 2012-03-30 | 1890–2012 | 4 | |
| Sibiu | Sibiu | Romania, Sibiu | 1892-05-12 | 1945-05-31 | 1892–1945 | 4 | |
| Sighetu Marmației | Sighetu Marmației | Romania, Sighetu Marmației | 1890-05-13 | 1910-08-21 | 1890–1933 | 3 | |
| Simeria | Simeria | Romania, Simeria | -- | -- | | | |
| Şimleu Silvaniei | Şimleu Silvaniei | Romania, Şimleu Silvaniei | 1910-10-24 | -- | 1910 | 1 | |
| Sinaia | Sinaia | Romania, Sinaia | -- | -- | | | |
| Şinca Veche | Şinca Veche | Romania, Şinca Veche | -- | -- | | | |
| Slatina | Slatina | Romania, Slatina | -- | -- | | | |
| Snagov | Snagov | Romania, Snagov | -- | -- | | | |
| Suceava | Suceava | Romania, Suceava | -- | -- | | | |
| Színművészeti Egyetem | Színművészeti Egyetem | Romania, Tîrgu-Mureş, str. Köteles S. nr.6 | -- | -- | | | |
| Stadttheater Königsberg | Stadttheater Königsberg | Russia, Kaliningrad | 1893-01-28 | 1893-02-07 | 1893–1922 | 2 | |
| Schepkin’s Theatrical School Theatre | Schepkin’s Theatrical School Theatre | Russia, Moscow | 2012-10-23 | -- | 2012 | 1 | |
| Sfera teatr | Sfera teatr | Russia, Moscow, Karetny Ryad Ulitsa 3, Hermitage Gardens | 1998-10-22 | -- | 1998 | 1 | |
| Sovremennik Theatre | Sovremennik Theatre | Russia, Moscow, Чистопрудный бул | 1994-02-02 | 1994-02-04 | 1994 | 1 | |
| Sormovskij dramatičeskij teatr | Sormovskij dramatičeskij teatr | Russia, Nižnyj Novgorod, Nižnyj Novgorod | 1923-02-17 | -- | 1923 | 1 | |
| Saratovskij dramatičeski teatr imeni K. Marksa | Saratovskij dramatičeski teatr imeni K. Marksa | Russia, Saratov | 1958-04- | -- | 1958 | 1 | |
| Sevastopol | Sevastopol | Russia, Sevastopol | 1903-05- | -- | 1903 | 1 | |
| Smolensk | Smolensk | Russia, Smolensk | 1954-05- | -- | 1954 | 1 | |
| St. Petersburg | St. Petersburg | Russia, St. Petersburg | 1895-03-06 | 1996-04-28 | 1895–1996 | 6 | |
| Stadttheater Tilsit | Stadttheater Tilsit | Russia, Tilsit / Sovetsk | 1923-09-29 | -- | 1923 | 1 | |
| Spartak | Spartak | Russia, Voronezh, Ploshad Lenina,13 | 2017-11-28 | 2017-11-28 | 2017 | 1 | |
| Stadttheater Wiborg | Stadttheater Wiborg | Russia, Vyborg | 1893-02-03 | 1893-02-03 | 1893–1909 | 5 | |
| Scotland | Scotland | Scotland | 2007-01-30 | -- | 2007 | 1 | |
| Space on the Mile (V39) | The Space on the Mile (V39) | Scotland, Edinburgh, Radisson Blu, 80 High Street | 2010-08-06 | 2016-08-27 | 2010–2016 | 2 | |
| Space Triplex | theSpace Triplex | Scotland, Edinburgh, The Prince Philip Building, 19 Hill Place, Edinburgh, EH8 9DP | 2017-08-04 | 2017-08-26 | 2017 | 1 | |
| Shetland | Shetland | Scotland, Shetland | -- | -- | | | |
| Serbia | Serbia | Serbia | 1961-- | -- | 1961–1984 | 3 | |
| Šabac, Serbia | Šabac | Serbia | -- | -- | | | |
| Srpsko narodno pozorište u Novom Sadu | Srpsko narodno pozorište u Novom Sadu (Serbian National Theatre in Novi Sad) | Serbia, Novi Sad, Pozorišni trg 1 | 1925-02-17 | -- | 1925–2006 | 5 | |
| Šabačko pozorište | Šabačko pozorište | Serbia, Šabac, Karađorđeva 22 | 1955-05-27 | -- | 1955–2021 | 3 | |
| Senta | Senta | Serbia, Senta | 1890-04-14 | -- | 1890–1911 | 3 | |
| Sombor | Sombor | Serbia, Sombor | 1890-02-03 | 1890-02-17 | 1890–1940 | 5 | |
| Sremski Karlovci | Sremski Karlovci | Serbia, Sremski Karlovci | 1894-03-31 | -- | 1894 | 1 | |
| Subotica | Subotica | Serbia, Subotica | 1889-12-02 | 1889-12-11 | 1889–1928 | 9 | |
| SOTA Studio Theatre Singapore | SOTA Studio Theatre Singapore | Singapore | 2016-07-06 | 2016-07-08 | 2016 | 1 | |
| Slovenské národné divadlo Bratislava | Slovenské národné divadlo Bratislava | Slovak Republic, Bratislava | 1989-03-11 | -- | 1989 | 1 | |
| Slovenské národné divadlo - Divadlo P. O. Hviezdoslava | Slovenské národné divadlo - Divadlo P. O. Hviezdoslava | Slovak Republic, Bratislava | -- | -- | | | |
| Slovenské národné divadlo Bratislava | Slovenské národné divadlo Bratislava | Slovak Republic, Bratislava, Pribinova 17 | -- | -- | | | |
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