| Trøndelag Teater | Trøndelag Teater | 1938 – 2024 | 4514 | 74 |
| Teater Ibsen | Teater Ibsen | 1992 – 2023 | 3332 | 17 |
| Teatret Vart | Teatret Vårt (Teatret Vart) | 1974 – 2019 | 552 | 8 |
| Teatro San Martín | Teatro San Martín | 2001 | 6 | 6 |
| Teatrino Clandestino | Teatrino Clandestino | 1999 – 2002 | 75 | 5 |
| Theatergruppe der Kantonsschule Hottingen | Theatergruppe der Kantonsschule Hottingen | 2006 | 10 | 5 |
| Theater Pforzheim | Theater Pforzheim | 2004 | 4 | 4 |
| Teatro Nacional D. Maria II | Teatro Nacional D. Maria II | 2007 – 2019 | 21 | 3 |
| teaterverkstedet / teater x | teaterverkstedet / teater x | 1995 | 2 | 1 |
| Teater Fusentast | Teater Fusentast | 1992 – 2020 | 46 | 1 |
| Théâtre Centaure | Théâtre Centaure | 2000 – 2003 | 3 | |
| Théâtre de l'Oeuvre | Théâtre de l'Oeuvre | 1893 – 1923 | 61 | |
| Teatr Mały z Warsawy pod kier | Teatr Mały z Warsawy pod kier | 1913 | 1 | |
| Theatre Couture | Theatre Couture | 2000 | 1 | |
| Theater Die Insel in der Komödie | Theater Die Insel in der Komödie | 1947 | 3 | |
| Teatr kukol | Teatr kukol (Puppet Theatre) | 2002 | 2 | |
| Tehrik-e-Niswan | Tehrik-e-Niswan | 2006 – 2012 | 4 | |
| Tournée trupy Karola Adwentowicza | Tournée trupy Karola Adwentowicza | 1908 | 31 | |
| Tivoli Teater | Tivoli Teater | 1901 | 1 | |
| Teatro Stabile di Genova | Teatro Stabile di Genova | 1977 – 2011 | 10 | |
| Teater Manu - norsk tegnspråkteater | Teater Manu - norsk tegnspråkteater | 2006 | 11 | |
| Trupa Anastazego Trapszy i Bolesława Kremskiego | Trupa Anastazego Trapszy i Bolesława Kremskiego | 1882 | 1 | |
| Tokyo Stage Society | Tokyo Stage Society | 1912 | 1 | |
| Teatro Nacional Almeida Garrett | Teatro Nacional Almeida Garrett | 1928 | 3 | |
| Tara Arts UK | Tara Arts UK | 2006 | 18 | |
| Theatre Guild, The | The Theatre Guild | 1923 – 1924 | 3 | |
| Tournée Gabrieli Zapolskiej | Tournée Gabrieli Zapolskiej | 1887 | 1 | |
| Thiasos Kyveli Adrianou | Thiasos Kyveli Adrianou | 1907 – 1928 | 44 | |
| Theater Department of Sangmyung University's College of Arts | Theater Department of Sangmyung University's College of Arts | 2023 | 1 | |
| Test Pilot Productions | Test Pilot Productions | 2006 | 2 | |
| Transvaalse Raad vir die Uitvoerende Kunste | Transvaalse Raad vir die Uitvoerende Kunste | 1985 | 1 | |
| Trond Woxen | Trond Woxen | 1997 | 1 | |
| Theater Oberhausen | Theater Oberhausen | 1999 – 2016 | 18 | |
| Teatr «U Kamina» | Teatr «U Kamina» | 2012 | 2 | |
| Trupa Józefa Teksla i Feliksa Wesosowskiego | Trupa Józefa Teksla i Feliksa Wesosowskiego | 1883 | 1 | |
| Thiasos tis Ellinikis Komodias – Eftychios Vonaseras-Evangel | Thiasos tis Ellinikis Komodias – Eftychios Vonaseras-Evangel | 1898 | 1 | |
| Théâtre du Vieux-Colombier | Théâtre du Vieux-Colombier | 1918 | 1 | |
| Theatre Vertigo | Theatre Vertigo | 2007 | 1 | |
| Theatre of Ireland | Theatre of Ireland | 1906 | 1 | |
| Teatre d’Art | Teatre d’Art | 1922 | 1 | |
| Tampere Internasjonale Teaterfestival | Tampere Internasjonale Teaterfestival | 1993 | 1 | |
| Theater im Rang | Theater im Rang | 1970 | 1 | |
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