| Tivoli Teater | Tivoli Teater | 1901 | 1 | |
| Thiasos (Olympia Lalaouni-Damaskou?) | Thiasos (Olympia Lalaouni-Damaskou?) | 1907 | 1 | |
| Teatro Stabile di Genova | Teatro Stabile di Genova | 1977 – 2011 | 10 | |
| Théâtre Centaure | Théâtre Centaure | 2000 – 2003 | 3 | |
| Tysnesfest 09 | Tysnesfest 09 | 2009 | 1 | |
| Théâtre de l'Oeuvre | Théâtre de l'Oeuvre | 1893 – 1923 | 61 | |
| Theatre Couture | Theatre Couture | 2000 | 1 | |
| Teatr Nowości ze Lwowa | Teatr Nowości ze Lwowa | 1912 | 2 | |
| Theater Die Insel in der Komödie | Theater Die Insel in der Komödie | 1947 | 3 | |
| Tehrik-e-Niswan | Tehrik-e-Niswan | 2006 – 2012 | 4 | |
| Tsukiji Little Theatre | Tsukiji Little Theatre | 1924 – 1928 | 6 | |
| Tournée Wandy Siemaszkowej | Tournée Wandy Siemaszkowej | 1907 | 4 | |
| Transvaalse Raad vir die Uitvoerende Kunste | Transvaalse Raad vir die Uitvoerende Kunste | 1985 | 1 | |
| Theater E | Theater E | 1994 | 1 | |
| Trupa Anastazego Trapszy i Bolesława Kremskiego | Trupa Anastazego Trapszy i Bolesława Kremskiego | 1882 | 1 | |
| Teatro Nacional Almeida Garrett | Teatro Nacional Almeida Garrett | 1928 | 3 | |
| Teater Joker | Teater Joker | 2012 – 2015 | 3 | |
| Tara Arts UK | Tara Arts UK | 2006 | 18 | |
| Tournée Gabrieli Zapolskiej | Tournée Gabrieli Zapolskiej | 1887 | 1 | |
| Theatron Odeiou | Theatron Odeiou | 1919 | 3 | |
| Test Pilot Productions | Test Pilot Productions | 2006 | 2 | |
| Theater im Rang | Theater im Rang | 1970 | 1 | |
| Tadao Nakane | Tadao Nakane | 1994 | 3 | |
| Theater Oberhausen | Theater Oberhausen | 1999 – 2016 | 18 | |
| Trupa Józefa Teksla i Feliksa Wesosowskiego | Trupa Józefa Teksla i Feliksa Wesosowskiego | 1883 | 1 | |
| Tom Løberg | Tom Løberg | 2010 | 1 | |
| Thiasos tis Ellinikis Komodias – Eftychios Vonaseras-Evangel | Thiasos tis Ellinikis Komodias – Eftychios Vonaseras-Evangel | 1898 | 1 | |
| Theatre Vertigo | Theatre Vertigo | 2007 | 1 | |
| Thiasos Nikos Moraïtis | Thiasos Nikos Moraïtis | 1918 | 1 | |
| Thiasos Thomas Oikonomou | Thiasos Thomas Oikonomou | 1906 – 1924 | 26 | |
| Théâtre du Rideau de Bruxelles | Théâtre du Rideau de Bruxelles | 2002 | 1 | |
| Thiasos Panos Kalogerikos | Thiasos Panos Kalogerikos | 1910 | 1 | |
| Tofusha | Tofusha | 1994 | 1 | |
| Teaterfestivalen på Stiklestad | Teaterfestivalen på Stiklestad | 2010 | 1 | |
| Toneelgroep Amsterdam | Toneelgroep Amsterdam | 1990 – 2021 | 108 | |
| Teatro di Sardegna | Teatro di Sardegna | 1993 | 2 | |
| Thiasos Athanasios Marikos-Emmanouil Kantiotis | Thiasos Athanasios Marikos-Emmanouil Kantiotis | 1916 | 1 | |
| Teater Mungo | Teater Mungo | 2002 | 28 | |
| Trupa Eugeniusza Majdrowicza | Trupa Eugeniusza Majdrowicza | 1904 | 1 | |
| Teatr Telewizji | Teatr Telewizji | 1969 – 2009 | 8 | |
| Tokyo Geijutsuza / Gekijo (Tokyo Art Theatre) | Tokyo Geijutsuza / Gekijo (Tokyo Art Theatre) | 1914 – 1946 | 3 | |
| Thanhouser Company | Thanhouser Film Corporation (Thanhouser Company) | 1909 | 4 | |
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