| Theatre Delicatessen | Theatre Delicatessen | England, London, 35 Marylebone High Street | 2011-01-05 | 2011-02-05 | 2011 | 1 | |
| Tara Theatre | Tara Theatre | England, London, 356 Garratt Lane | 2018-05-03 | 2018-05-04 | 2018 | 1 | |
| The Torch Theatre | The Torch Theatre | England, London, 37 Wilton Place | 1938-11-18 | 1945-09-09 | 1938–1947 | 3 | |
| The Young Vic | The Young Vic | England, London, 66 The Cut Waterloo | 1988-10-13 | 2020-03-13 | 1988–2020 | 5 | |
| Tower Theatre | Tower Theatre | England, London, Bride Lane | 1953-05-15 | 2020-11-17 | 1953–2020 | 15 | |
| Theatre, Greenwich | Greenwich Theatre | England, London, Crooms Hill | 1973-05-16 | 2018-09-29 | 1973–2018 | 7 | |
| The Cockpit Theatre | The Cockpit Theatre | England, London, Gateforth St | 2012-04-17 | 2018-04-28 | 2012–2018 | 3 | |
| Theatre Royal Stratford East | Theatre Royal Stratford East | England, London, Gerry Raffles Square | 1954-06-01 | -- | 1954 | 1 | |
| The People´s Theatre, Fortune Theatre | The People´s Theatre, Fortune Theatre | England, London, Russell Street | 1931-03-23 | -- | 1931 | 1 | |
| The Pit (Barbican Centre) | The Pit (Barbican Centre) | England, London, Silk St | 1982-05-12 | 2009-05-16 | 1982–2009 | 7 | |
| The Starting Gate | The Starting Gate | England, London, Station Rd, Wood Green | 2000-09-13 | 2000-10-15 | 2000 | 1 | |
| Terry's Theatre | Terry's Theatre | England, London, Strand | 1891-01-27 | 1908-02-15 | 1891–1908 | 3 | |
| The Streatham Hill Theatre | The Streatham Hill Theatre | England, London, Streatham Hill | 1955-01-31 | -- | 1955 | 1 | |
| Tavistock Little Theatre | Tavistock Little Theatre | England, London, Tavistock Square, Bloomsbury | 1933-05-05 | 1938-05-07 | 1933–1938 | 6 | |
| Theatre Royal | Theatre Royal | England, Manchester, Smithy Street | 1904-04-25 | 1904-04-30 | 1904–1910 | 4 | |
| Theatre Royal Margate | Theatre Royal Margate | England, Margate, Addington Street | 2014-11-03 | 2014-11-03 | 2014 | 1 | |
| Theatre Royal | Theatre Royal | England, Middlesbrough, Sussex Street | 1907-07-22 | 1907-07-24 | 1907 | 1 | |
| Tyne Theatre & Opera House | Tyne Theatre & Opera House | England, Newcastle upon Tyne, 117 Westgate Road | 1910-03-21 | -- | 1910 | 2 | |
| Theatre Royal | Theatre Royal | England, Newcastle upon Tyne, Grey Street | 1997-09-25 | 2018-02-17 | 1997–2018 | 2 | |
| Theatre Royal | Theatre Royal | England, Nottingham, Theatre Square | 2018-02-05 | 2018-02-10 | 2018 | 1 | |
| The Minack Theatre | The Minack Theatre | England, Penzance, Cornwall, Porthcurno | 1965-08-09 | 2007-08-03 | 1965–2007 | 2 | |
| Theatre Royal | Theatre Royal Plymouth | England, Plymouth, Royal Parade | 1993-05-11 | 2017-10-07 | 1993–2017 | 3 | |
| Theatre Royal | Theatre Royal | England, Portsmouth | 1897-10-29 | -- | 1897 | 1 | |
| The Playhouse | The Playhouse | England, Sheffield, South Yorkshire, Townshead Street | 1960-02-29 | -- | 1960 | 1 | |
| Theatre Severn | Theatre Severn | England, Shrewsbury, Frankwell Quay | 2014-02-12 | 2014-02-13 | 2014 | 1 | |
| The Strode Theatre | The Strode Theatre | England, Somerset, Church Rd, Street | 1985-01-17 | -- | 1985 | 1 | |
| The Shakespeare Festival | The Shakespeare Festival | England, Stratford-upon-Avon | 1982-07-09 | 1982-07-30 | 1982 | 1 | |
| Trinity Theatre, The | The Trinity Theatre | England, Tunbridge Wells, Church Road | 1985-01-19 | 1993-09-30 | 1985–2018 | 7 | |
| Theatre Royal | Theatre Royal | England, Wakefield, 12 Drury Lane | 1993-10-07 | 1993-10-09 | 1993–1999 | 2 | |
| Trafalgar Square Theatre | Trafalgar Square Theatre | England, Westminster, London, St Martin's Lane | 1893-02-20 | -- | 1893 | 1 | |
| Theatre Royal | Theatre Royal | England, Winchester, Hampshire, 21 -23 Jewry Street | 1994-03-01 | 2011-03-19 | 1994–2011 | 3 | |
| The Arena Studio Theatre | The Arena Studio Theatre | England, Wolverhampton, Wulfruna Street | 1985-01-10 | -- | 1985–2011 | 2 | |
| Tallin | Tallin | Estonia | -- | -- | | | |
| Tērbatā | Tērbatā | Estonia, Tartu | 1918-09-10 | -- | 1918 | 1 | |
| Teater Vanemuine | Teater Vanemuine | Estonia, Tartu, Vanemuise 6 | 1996-09-22 | 2004-04-23 | 1996–2006 | 3 | |
| Teater Geist | Teater Geist | Finland, Degerby | 2015-03-19 | -- | 2015 | 1 | |
| Teater i Rådhussalongen | Teater i Rådhussalongen | Finland, Gamlakarleby (Kokkola) | 1886-02-19 | -- | 1886 | 1 | |
| Teatteri Jurkka | Teatteri Jurkka | Finland, Helsinki, 7, Vironkatu | 1995-09-28 | -- | 1995 | 1 | |
| Teatteri Takomo | Teatteri Takomo | Finland, Helsinki, Fredrikinkatu 18 | 1997-10-01 | 2001-12-14 | 1997–2001 | 2 | |
| Teaterhögskolan Teatterikorkeakoulu | Teaterhögskolan - Teatterikorkeakoulu (Theatre Academy) | Finland, Helsinki, Haapaniemenkatu 6 | 2001-03-21 | 2001-03-27 | 2001 | 1 | |
| Teatteri Imatra | Teatteri Imatra | Finland, Imatra, Kallenkuja 3 | 1972-- | 1973-- | 1972 | 1 | |
| Tammerfors | Tammerfors | Finland, Tammerfors | 1893-04-13 | 1994-- | 1893–1993 | 3 | |
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