| Teatro Massimo Bellini | Teatro Massimo Bellini | 2024 | 1 | |
| Theater am Brunnenhof | Theater am Brunnenhof | 1949 – 1950 | 3 | |
| Teaterkompaniet Røde Rom | Teaterkompaniet Røde Rom | 2009 – 2010 | 3 | |
| Teatro 5 de Setembro | Teatro 5 de Setembro | 1952 | 2 | |
| Torosha | Torosha | 1918 | 1 | |
| Teatr Polski pod dyr. Władysława Czajkowskiego | Teatr Polski pod dyr. Władysława Czajkowskiego | 1904 | 1 | |
| Talawa Theatre Company | Talawa Theatre Company | 1996 | 1 | |
| Tomskij dramatičeskij teatr imeni Čkalova | Tomskij dramatičeskij teatr imeni Čkalova (Chkalov Tomsk Drama Theatre) | 1957 | 1 | |
| Thiasos Dimitrios Angelakis | Thiasos Dimitrios Angelakis | 1900 – 1901 | 3 | |
| Tønder-Turneen | Tønder-Turneen | 1910 | 2 | |
| Tooneelvereeniging, De | De Tooneelvereeniging | 1889 | 1 | |
| Teatro di Documenti | Teatro di Documenti | 2019 | 1 | |
| Theater Bielefeld | Theater Bielefeld | 2004 – 2016 | 4 | |
| Tel Aviv-Yafo First International Theatre Festival | Tel Aviv-Yafo First International Theatre Festival | 2009 | 1 | |
| Teatro de la Danza de Madrid | Teatro de la Danza de Madrid | 2010 – 2011 | 40 | |
| Torinokai | Torinokai | 1983 – 1994 | 3 | |
| Thiasos Christina Kalogerikou | Thiasos Christina Kalogerikou | 1914 | 1 | |
| Theater der Litterarischen Gesellschaft in Leipzig | Theater der Litterarischen Gesellschaft in Leipzig | 1896 – 1897 | 3 | |
| Theatre Couture | Theatre Couture | 2000 | 1 | |
| Teatr Soveta soûzov | Teatr Soveta soûzov (Soviet of Unions Theatre) | 1921 | 1 | |
| Theater Die Insel in der Komödie | Theater Die Insel in der Komödie | 1947 | 3 | |
| Thiasos Thomas Oikonomou-Loukia Tiveri | Thiasos Thomas Oikonomou-Loukia Tiveri | 1909 | 1 | |
| Tehrik-e-Niswan | Tehrik-e-Niswan | 2006 – 2012 | 4 | |
| Teatrul Nottara | Teatrul Nottara | 2022 | 1 | |
| Tivoli Teater | Tivoli Teater | 1901 | 1 | |
| Teatre Romea | Teatre Romea | 2003 – 2006 | 8 | |
| Teatro Stabile di Genova | Teatro Stabile di Genova | 1977 – 2018 | 11 | |
| Théâtre Centaure | Théâtre Centaure | 2000 – 2003 | 3 | |
| Teatr Nowy | Teatr Nowy | 1913 | 2 | |
| Théâtre de l'Oeuvre | Théâtre de l'Oeuvre | 1893 – 1923 | 61 | |
| Teatro Nacional Almeida Garrett | Teatro Nacional Almeida Garrett | 1928 | 3 | |
| Tsukiji Little Theatre | Tsukiji Little Theatre | 1924 – 1928 | 6 | |
| Tara Arts UK | Tara Arts UK | 2006 | 18 | |
| Thiasos (Olympia Lalaouni-Damaskou?) | Thiasos (Olympia Lalaouni-Damaskou?) | 1907 | 1 | |
| Tournée Gabrieli Zapolskiej | Tournée Gabrieli Zapolskiej | 1887 | 1 | |
| TLTA Produktion | TLTA Produktion | 2023 | 1 | |
| Test Pilot Productions | Test Pilot Productions | 2006 | 2 | |
| Tysnesfest 09 | Tysnesfest 09 | 2009 | 1 | |
| Transvaalse Raad vir die Uitvoerende Kunste | Transvaalse Raad vir die Uitvoerende Kunste | 1985 | 1 | |
| Teatr Nowości ze Lwowa | Teatr Nowości ze Lwowa | 1912 | 2 | |
| Trupa Anastazego Trapszy i Bolesława Kremskiego | Trupa Anastazego Trapszy i Bolesława Kremskiego | 1882 | 1 | |
| Trupa Józefa Teksla i Feliksa Wesosowskiego | Trupa Józefa Teksla i Feliksa Wesosowskiego | 1883 | 1 | |
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