| Thiasos Evangelos Pantopoulos | Thiasos Evangelos Pantopoulos | 1903 | 3 | |
| Tokyo International Players | Tokyo International Players | 2004 | 1 | |
| Theater Die Insel in der Komödie | Theater Die Insel in der Komödie | 1947 | 3 | |
| Thanhouser Company | Thanhouser Company | 1909 | 3 | |
| Thiasos Kathreftis | Thiasos Kathreftis | 2006 | 1 | |
| Theater Biel Solothurn | Theater Biel Solothurn | 2003 - 2016 | 17 | |
| Temporada Alta | Temporada Alta | 2006 | 1 | |
| Teatro Stabile di Genova | Teatro Stabile di Genova | 1977 - 2011 | 10 | |
| Theatre Babel | Theatre Babel | 2004 - 2005 | 11 | |
| Thiasos Tilemachos Lepeniotis | Thiasos Tilemachos Lepeniotis | 1914 | 1 | |
| Théâtre de l'Oeuvre | Théâtre de l'Oeuvre | 1893 - 1923 | 61 | |
| Twelve Three And A Half | Twelve Three And A Half | 2005 - 2006 | 3 | |
| Teatar «Salsa i smjah» | Teatar «Salsa i smjah» | 1924 | 1 | |
| Tara Arts UK | Tara Arts UK | 2006 | 18 | |
| Trupa Karola Adwentowicza | Trupa Karola Adwentowicza | 1908 | 10 | |
| TTU Tech Players | TTU Tech Players | 2006 | 1 | |
| Tavistock Repertory Company | Tavistock Repertory Company | 1933 - 2004 | 23 | |
| Teater Grimsborken | Teater Grimsborken | 2005 - 2007 | 91 | |
| Transvaalse Raad vir die Uitvoerende Kunste | Transvaalse Raad vir die Uitvoerende Kunste | 1985 | 1 | |
| Toneelgroep De Appel | Toneelgroep De Appel | 1973 - 2003 | 5 | |
| Three P's Society of Tufts College, The | The Three P's Society of Tufts College | 1913 | 1 | |
| Trupa Anastazego Trapszy i Bolesława Kremskiego | Trupa Anastazego Trapszy i Bolesława Kremskiego | 1882 | 1 | |
| Teatr Wielki | Teatr Wielki | | | |
| Thiasos Koula Zervou | Thiasos Koula Zervou | 1921 | 1 | |
| Thiasos tis Ellinikis Komodias – Eftychios Vonaseras-Evangel | Thiasos tis Ellinikis Komodias – Eftychios Vonaseras-Evangel | 1898 | 1 | |
| Teatr Letni w Ogrodzie Bernardyńskim | Teatr Letni w Ogrodzie Bernardyńskim | 1907 | 1 | |
| Theatrinon Theatres | Theatrinon Theatres | 2006 - 2007 | 4 | |
| teaterverkstedet / teater x | teaterverkstedet / teater x | 1995 | 2 | |
| Thiasos Nikolaos Plessas | Thiasos Nikolaos Plessas | 1911 | 4 | |
| Theater Oberhausen | Theater Oberhausen | 1999 - 2016 | 18 | |
| Thiasos Marika Kotopouli | Thiasos Marika Kotopouli | 1918 - 1945 | 6 | |
| Toneelgroep Amsterdam | Toneelgroep Amsterdam | 1990 - 2013 | 104 | |
| Teatr Łódzki | Teatr Łódzki | 1906 | 1 | |
| Teatrón | Teatrón | 1989 | 1 | |
| Theaterfestival Deutscher Sprache | Theaterfestival Deutscher Sprache | 2002 - 2003 | 2 | |
| Tyrili Teatret | Tyrili Teatret | 1991 | 1 | |
| Thanhouser | Thanhouser | 1911 - 2019 | 2 | |
| Theatre Four | Theatre Four | 1963 | 1 | |
| Trond Reinholdtsen | Trond Reinholdtsen | 2011 | 1 | |
| Theatraubling | Theatraubling | 1997 - 2001 | 2 | |
| Thiasos (Konstantinos Vonaseras?) | Thiasos (Konstantinos Vonaseras?) | 1896 | 1 | |
| Trupa Czesława Wiśniewskiego | Trupa Czesława Wiśniewskiego | 1904 - 1906 | 3 | |
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