| Marlowe Theatre | Marlowe Theatre | England, Canterbury, The Friars | 2018-07-19 | 2018-07-21 | 2018 | 1 | |
| Miller Centre, The | The Miller Centre | England, Caterham, Surrey, 30 Godstone Road | 2007-07-05 | 2007-08-03 | 2007 | 1 | |
| Minerva Theatre | Minerva Theatre | England, Chichester, West Sussex, Oaklands Park | 1994-06-02 | 2019-09-28 | 1994–2019 | 4 | |
| Mercury Theatre Colchester | Mercury Theatre Colchester | England, Colchester, Essex, Balkerne Gate | 2009-11-05 | 2009-11-21 | 2009 | 1 | |
| Marine Theatre | Marine Theatre | England, Dorset, Church St, Lyme Regis | 2006-05-31 | -- | 2006–2007 | 2 | |
| Merlin Theatre | Merlin Theatre | England, Frome, Bath Rd | 1993-10-21 | 2014-11-07 | 1993–2014 | 2 | |
| Main Theatre, The | The Main Theatre | England, Hexham, Beaumont Street | 2022-09-28 | 2022-09-29 | 2022 | 1 | |
| Man in the Moon Theatre | Man in the Moon Theatre | England, London, 392 Kings Road | 1994-01-20 | 1994-01-20 | 1994 | 1 | |
| Mountview Academy of Theatre Arts | Mountview Academy of Theatre Arts | England, London, Clarendon Rd | 2004-06-17 | 2004-06-25 | 2004 | 1 | |
| Millfield Theatre | Millfield Theatre | England, London, Silver Street, Edmonton | 2011-06-07 | 2014-01-25 | 2011–2014 | 2 | |
| Malvern Theatres - Festival Theatre | Malvern Theatres - Festival Theatre | England, Malvern, Worcestershire, Grange Road | 1950-07-24 | 2013-11-30 | 1950–2013 | 8 | |
| Malvern Theatre | Malvern Theatre | England, Malvern, Worcestershire, Grange Road | 1930-06-23 | 1930-06-25 | 1930 | 1 | |
| Manchester | Manchester | England, Manchester | -- | -- | | | |
| Midland Hotel Theatre | Midland Hotel Theatre | England, Manchester, 16 Peter Street | 1905-03-24 | -- | 1905 | 1 | |
| Manchester Opera House | Manchester Opera House | England, Manchester, 3 Quay Street | 1964-10-19 | -- | 1964 | 1 | |
| Marlborough College | Marlborough College | England, Marlborough, Wiltshire, Bath Road | 1999-04-29 | -- | 1999 | 1 | |
| Middlesbrough Theatre | Middlesbrough Theatre | England, Middlesbrough, The Avenue | 2005-03-31 | 2005-04-01 | 2005–2011 | 2 | |
| Milton Keynes Theatre | Milton Keynes Theatre | England, Milton Keynes, 500 Marlborough Gate | 2018-02-27 | 2018-03-03 | 2018 | 1 | |
| Mullion School | Mullion School | England, Mullion, Helston, Meaver Rd, | 2013-10-11 | 2013-10-12 | 2013 | 1 | |
| Mundford Village Hall | Mundford Village Hall | England, Mundford Thetford Norfolk, St Leonards Street | 2007-12-04 | -- | 2007 | 1 | |
| Maddermarket Theatre | Maddermarket Theatre | England, Norwich, Norfolk, St Johns Alley | 1925-10-26 | 2002-02-02 | 1925–2002 | 21 | |
| Moser Theatre, Wadham College | Moser Theatre, Wadham College | England, Oxford, Parks Rd | 2005-11-15 | 2005-11-19 | 2005 | 1 | |
| Mermaid Theatre | Mermaid Theatre | England, Puddle Dock, London | 1961-02-16 | -- | 1961 | 1 | |
| Micklefield Hall | Micklefield Hall | England, Rickmansworth, Hertfordshire, Sarratt Rd, Sarratt | 2014-03-22 | 2014-03-28 | 2014 | 1 | |
| Medway Little Theatre | Medway Little Theatre | England, Rochester, 256 High Street | 2016-05-10 | 2016-05-21 | 2016 | 1 | |
| Maltings Arts Centre | Maltings Arts Centre | England, St Albans, Hertfordshire, The Maltings | 1993-09-24 | -- | 1993 | 1 | |
| Mikkeli | Mikkeli | Finland, Mikkeli | 1950-- | 1951-- | 1950–2011 | 2 | |
| Mikkelin Teatteri | Mikkelin Teatteri | Finland, Mikkeli, Savilahdenkatu 11 | 1980-02-21 | -- | 1980 | 1 | |
| Mariehamn | Mariehamn | Finland, Åland Islands | 1999-10-09 | 1999-10-24 | 1999 | 1 | |
| Moustier-Ventadour - Château de Ventadour | Moustier-Ventadour - Château de Ventadour | France | 2023-08-01 | 2023-07-21 | 2023 | 1 | |
| Maison de la Culture d’Amiens, Grand Théâtre | Maison de la Culture d’Amiens, Grand Théâtre | France, Amiens, 2 Place Léon Gontier | 2009-06-10 | 2014-02-20 | 2009–2014 | 3 | |
| Maison dans la Vallée | Maison dans la Vallée | France, Avon, 27-29 Rue du Vieux Ru | 2019-03-21 | -- | 2019 | 1 | |
| MC93, Salle Christian Bourgois | MC93, Salle Christian Bourgois | France, Bobigny, 1 Boulevard Lénine | 2010-02-11 | 2010-02-14 | 2010 | 2 | |
| Maison de la Culture de Bourges | Maison de la Culture de Bourges | France, Bourges, Place André Malraux | 1997-05-21 | 2014-12-04 | 1997–2014 | 3 | |
| Malraux - Scène nationale Chambéry Savoie | Malraux - Scène nationale Chambéry Savoie | France, Chambéry, 67 Place Président Mitterand | 2012-02-07 | 2014-04-25 | 2012–2014 | 2 | |
| Maison des Jeunes et de la Culture, Théâtre de la | Théâtre de la Maison des Jeunes et de la Culture | France, Colombes, 96-98 Rue Saint-Denis | 1966-03-22 | -- | 1966 | 1 | |
| Maison des Arts et de la Culture | Maison des Arts et de la Culture | France, Créteil, 1 Place Salvador Allende | 1999-03-25 | 2011-12-03 | 1999–2020 | 3 | |
| Maison des Œuvres Saint Martin | Maison des Œuvres Saint Martin | France, Erstein, 9 Quai du Couvent | 2015-04-10 | -- | 2015 | 1 | |
| Manoir du Haut Busson | Manoir du Haut Busson | France, Évron, Manoir du Haut Busson | 2018-08-06 | -- | 2018 | 1 | |
| MC2 - Maison de la Culture de Grenoble | MC2 - Maison de la Culture de Grenoble | France, Grenoble, 4 Rue Paul Claudel | 2014-02-05 | 2019-03-15 | 2014–2019 | 3 | |
| Maison des Arts | Maison des Arts | France, Laon, 2 Place Aubry | 1999-02-05 | -- | 1999 | 1 | |
| Marseille | Marseille | France, Marseille | 1897-03-16 | -- | 1897 | 1 | |
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