| Theatergruppe der Kantonsschule Hottingen | Theatergruppe der Kantonsschule Hottingen | 2006 | 10 | 5 |
| Theatergruppe Sankt Georgen, Die | Die Theatergruppe Sankt Georgen | 2001 | 1 | |
| Theaterverein (Freie Volksbühne) | Theaterverein Freie Volksbühne (Theaterverein (Freie Volksbühne)) | 1890 – 1905 | 11 | |
| Theatraubling | Theatraubling | 1997 – 2001 | 2 | |
| Theatre Arts Guild | Theatre Arts Guild | 2025 | 1 | |
| Theatre Babel | Theatre Babel | 2004 – 2005 | 11 | |
| Théâtre Centaure | Théâtre Centaure | 2000 – 2003 | 3 | |
| Theatre Couture | Theatre Couture | 2000 | 1 | |
| Théâtre de Caen | Théâtre de Caen | 1994 – 2014 | 29 | |
| Théâtre de l'Oeuvre | Théâtre de l'Oeuvre | 1893 – 1923 | 61 | |
| Théâtre de Liège | Théâtre de Liège | 2024 | 1 | |
| Théâtre des Capucins | Théâtre des Capucins | 2000 – 2003 | 5 | |
| Théâtre du Rideau de Bruxelles | Théâtre du Rideau de Bruxelles | 2002 | 1 | |
| Théâtre du Vieux-Colombier | Théâtre du Vieux-Colombier | 1918 | 1 | |
| Theatre Four | Theatre Four | 1963 | 1 | |
| Theatre Guild, The | The Theatre Guild | 1923 – 1924 | 3 | |
| Théâtre Libre | Théâtre Libre | 1890 – 1894 | 9 | |
| Théâtre Nanterre-Amandiers | Théâtre Nanterre-Amandiers | 2013 – 2014 | 25 | |
| Théâtre National de Bretagne | Théâtre National de Bretagne | 1997 – 2011 | 19 | |
| Theatre New Brunswick | Theatre New Brunswick | 2011 | 2 | |
| Theatre of Ireland | Theatre of Ireland | 1906 | 1 | |
| Theatre Office Natori, The | The Theatre Office Natori | 1999 – 2012 | 24 | |
| Theatre Royal Bath Productions | Theatre Royal Bath Productions | 2010 | 1 | |
| Theatre Vertigo | Theatre Vertigo | 2007 | 1 | |
| Théâtre Vidy-Lausanne | Théâtre Vidy-Lausanne | 1993 – 2014 | 31 | |
| Theatrinon Theatres | Theatrinon Theatres | 2006 – 2007 | 4 | |
| Theatro Circo | Theatro Circo | 2007 – 2008 | 6 | |
| Theatron Odeiou | Theatron Odeiou | 1919 | 3 | |
| Thelma Holt | Thelma Holt | 1994 | 3 | |
| Therese Elfforss' Sällskap | Therese Elfforss' Sällskap | 1876 – 1879 | 9 | |
| Thiaso Xenofon Isaïas | Thiaso Xenofon Isaïas | 1903 | 1 | |
| Thiasos (Konstantinos Vonaseras?) | Thiasos (Konstantinos Vonaseras?) | 1896 | 1 | |
| Thiasos (Olympia Lalaouni-Damaskou?) | Thiasos (Olympia Lalaouni-Damaskou?) | 1907 | 1 | |
| Thiasos (Rozalia Nika?) | Thiasos (Rozalia Nika?) | 1910 | 1 | |
| Thiasos Athanasios Marikos-Emmanouil Kantiotis | Thiasos Athanasios Marikos-Emmanouil Kantiotis | 1916 | 1 | |
| Thiasos Christina Kalogerikou | Thiasos Christina Kalogerikou | 1914 | 1 | |
| Thiasos Christina Kalogerikou-Anthi Miliadou | Thiasos Christina Kalogerikou-Anthi Miliadou | 1916 | 2 | |
| Thiasos Dimitrios Angelakis | Thiasos Dimitrios Angelakis | 1900 – 1901 | 3 | |
| Thiasos Dimosthenis Alexiadis | Thiasos Dimosthenis Alexiadis | 1901 | 1 | |
| Thiasos Eftychios Vonaseras | Thiasos Eftychios Vonaseras | 1894 – 1904 | 5 | |
| Thiasos Ellinikis Komodias Michaïl Iakovidis | Thiasos Ellinikis Komodias Michaïl Iakovidis | 1909 | 2 | |
| Thiasos Evangelia Paraskevopoulou | Thiasos Evangelia Paraskevopoulou | 1898 | 2 | |
|
|
