| Teatro Paulista | Teatro Paulista | 1956 | 1 | |
| Theatre Guild, The | The Theatre Guild | 1923 – 1924 | 3 | |
| Theatre Babel | Theatre Babel | 2004 – 2005 | 11 | |
| Theater der Modernen | Theater der Modernen | 1894 – 1895 | 11 | |
| Thiasos Kyveli Adrianou | Thiasos Kyveli Adrianou | 1907 – 1928 | 44 | |
| Territorio Violeta | Territorio Violeta | 2023 | 1 | |
| Tokyo International Players | Tokyo International Players | 2004 | 1 | |
| Theater am Schiffbauerdamm | Theater am Schiffbauerdamm | 1950 | 1 | |
| Trond Woxen | Trond Woxen | 1997 | 1 | |
| Thiasos Kathreftis | Thiasos Kathreftis | 2006 | 1 | |
| Tokyo Stage Society | Tokyo Stage Society | 1912 | 1 | |
| Theater Biel Solothurn | Theater Biel Solothurn | 2003 – 2019 | 25 | |
| Théâtre du Vieux-Colombier | Théâtre du Vieux-Colombier | 1918 | 1 | |
| Toneelgroep De Appel | Toneelgroep De Appel | 1973 – 2003 | 5 | |
| Théâtre Libre | Théâtre Libre | 1890 – 1894 | 9 | |
| Theatre of Ireland | Theatre of Ireland | 1906 | 1 | |
| Teatri Molisani | Teatri Molisani | 2022 | 2 | |
| Twelve Three And A Half | Twelve Three And A Half | 2005 – 2006 | 3 | |
| Tilla Durieux mit Ensemble des Deutschen Volkstheaters Wien | Tilla Durieux mit Ensemble des Deutschen Volkstheaters Wien | 1933 | 2 | |
| Tampere Internasjonale Teaterfestival | Tampere Internasjonale Teaterfestival | 1993 | 1 | |
| Theater works | Theater works | 2024 | 1 | |
| TTU Tech Players | TTU Tech Players | 2006 | 1 | |
| Teatr «U Kamina» | Teatr «U Kamina» | 2012 | 2 | |
| Tavistock Repertory Company | Tavistock Repertory Company | 1933 – 2004 | 23 | |
| Tower Theatre, The | The Tower Theatre | 2004 – 2020 | 4 | |
| Torosha | Torosha | 1918 | 1 | |
| Thomas Cortes' Skuespillerselskab | Thomas Cortes' Skuespillerselskab | 1857 – 1878 | 25 | |
| Teatr Mały | Teatr Mały | 1905 – 1913 | 2 | |
| Teatr-studiâ "Na Filâh" | Teatr-studiâ "Na Filâh" | 1992 | 1 | |
| Teatr Wielki | Teatr Wielki | | | |
| Thiasos Evangelia Paraskevopoulou | Thiasos Evangelia Paraskevopoulou | 1898 | 2 | |
| Thelma Holt | Thelma Holt | 1994 | 3 | |
| Theatrinon Theatres | Theatrinon Theatres | 2006 – 2007 | 4 | |
| Teaterkompaniet Røde Rom | Teaterkompaniet Røde Rom | 2009 – 2010 | 3 | |
| Theatre Royal Bath Productions | Theatre Royal Bath Productions | 2010 | 1 | |
| Teaterhögskolans avgangsstudenter | Teaterhögskolans avgangsstudenter | 2000 | 1 | |
| Theatre Four | Theatre Four | 1963 | 1 | |
| Tourism East Flores Municipal Office | Tourism East Flores Municipal Office | 2019 | 1 | |
| Theatergruppe Aleksandër Moisiu, Die | Die Theatergruppe Aleksandër Moisiu | 2010 | 5 | |
| Teatr Polski pod dyr. Władysława Czajkowskiego | Teatr Polski pod dyr. Władysława Czajkowskiego | 1904 | 1 | |
| Teatr RSFSR 1-j | Teatr RSFSR 1-j (Театр РСФСР 1-й) | 1921 | 2 | |
| Theatraubling | Theatraubling | 1997 – 2001 | 2 | |
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