| Tyrili Teatret | Tyrili Teatret | 1991 | 1 | |
| Tampere Theatre Festival | Tampere Theatre Festival | 2009 | 1 | |
| Theater works | Theater works | 2024 | 1 | |
| Teatr Ziemi Pomorskiej | Teatr Ziemi Pomorskiej | 1955 | 1 | |
| Trond Reinholdtsen | Trond Reinholdtsen | 2011 | 1 | |
| Teatr Fantazja | Teatr Fantazja | 1903 | 1 | |
| Theatre Office Natori, The | The Theatre Office Natori | 1999 – 2012 | 24 | |
| Tooneelvereeniging, De | De Tooneelvereeniging | 1889 | 1 | |
| Thiasos Christina Kalogerikou-Anthi Miliadou | Thiasos Christina Kalogerikou-Anthi Miliadou | 1916 | 2 | |
| Theater Bielefeld | Theater Bielefeld | 2004 – 2016 | 4 | |
| Trupa Czesława Wiśniewskiego | Trupa Czesława Wiśniewskiego | 1904 – 1906 | 3 | |
| Teatro de la Danza de Madrid | Teatro de la Danza de Madrid | 2010 – 2011 | 40 | |
| Teatr-studiâ "Na Filâh" | Teatr-studiâ "Na Filâh" | 1992 | 1 | |
| Torinokai | Torinokai | 1983 – 1994 | 3 | |
| Thiasos (Rozalia Nika?) | Thiasos (Rozalia Nika?) | 1910 | 1 | |
| Theater der Litterarischen Gesellschaft in Leipzig | Theater der Litterarischen Gesellschaft in Leipzig | 1896 – 1897 | 3 | |
| Teatro del Maggio Musicale Fiorentino | Teatro del Maggio Musicale Fiorentino | 2024 | 1 | |
| Talawa Theatre Company | Talawa Theatre Company | 1996 | 1 | |
| TITAN Teaterskole | TITAN Teaterskole | 2009 | 1 | |
| Thiasos Dimitrios Angelakis | Thiasos Dimitrios Angelakis | 1900 – 1901 | 3 | |
| Tivoli Teater | Tivoli Teater | 1901 | 1 | |
| Thiaso Xenofon Isaïas | Thiaso Xenofon Isaïas | 1903 | 1 | |
| Teatro Stabile di Genova | Teatro Stabile di Genova | 1977 – 2018 | 11 | |
| Teatr RSFSR 1-j | Teatr RSFSR 1-j (Театр РСФСР 1-й) | 1921 | 2 | |
| Théâtre Centaure | Théâtre Centaure | 2000 – 2003 | 3 | |
| Thiasos Ellinikis Komodias Michaïl Iakovidis | Thiasos Ellinikis Komodias Michaïl Iakovidis | 1909 | 2 | |
| Théâtre de l'Oeuvre | Théâtre de l'Oeuvre | 1893 – 1923 | 61 | |
| Teatro del Loto | Teatro del Loto | 2022 | 1 | |
| Theatre Couture | Theatre Couture | 2000 | 1 | |
| TITAN Teatergruppe | TITAN Teatergruppe | 2008 | 1 | |
| Theater Die Insel in der Komödie | Theater Die Insel in der Komödie | 1947 | 3 | |
| Tehrik-e-Niswan | Tehrik-e-Niswan | 2006 – 2012 | 4 | |
| Truppa dramatičeskich artistov pod upravleniem A. Tol´skogo | Truppa dramatičeskich artistov pod upravleniem A. Tol´skogo | 1914 | 1 | |
| Test Pilot Productions | Test Pilot Productions | 2006 | 2 | |
| Transvaalse Raad vir die Uitvoerende Kunste | Transvaalse Raad vir die Uitvoerende Kunste | 1985 | 1 | |
| Teatro d'Arte di Roma | Teatro d'Arte di Roma | 1927 – 1928 | 3 | |
| Tournée trupy Karola Adwentowicza | Tournée trupy Karola Adwentowicza | 1908 | 31 | |
| Trupa Anastazego Trapszy i Bolesława Kremskiego | Trupa Anastazego Trapszy i Bolesława Kremskiego | 1882 | 1 | |
| Teatro Studio Jankowski | Teatro Studio Jankowski | 2013 | 1 | |
| Teatro Nacional Almeida Garrett | Teatro Nacional Almeida Garrett | 1928 | 3 | |
| Teater Manu - norsk tegnspråkteater | Teater Manu - norsk tegnspråkteater | 2006 – 2024 | 12 | |
| Tara Arts UK | Tara Arts UK | 2006 | 18 | |
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