| Madlenianum Opera & Theatre | Madlenianum Opera & Theatre | Serbia, Belgrade, Glavna 32 | 2011-12-10 | -- | 2011 | 1 | |
| Macrobert | Macrobert | Scotland, Stirling, University of Stirling | 2014-02-27 | -- | 2014 | 1 | |
| Moray House Theatre | Moray House Theatre | Scotland, Edinburgh | 1969-11-25 | -- | 1969 | 1 | |
| Molodezhnom teatre «Anzhazhement» im. V. S. Zagoruiko | Molodezhnom teatre «Anzhazhement» im. V. S. Zagoruiko (Youth Theater "ENGAGEMENT" named after V.S. Zagoruiko) | Russia, Tyumen Oblast, Olimpiyskaya Ulitsa, 8 А | 2020-02-14 | -- | 2020 | 1 | |
| Mikhajlovskij teatr | Mikhajlovskij teatr | Russia, St. Petersburg, пл. Искусств, 1 | 2005-04-05 | 2005-04-06 | 2005 | 1 | |
| Mariinsky theatre | Mariinsky theatre | Russia, St. Petersburg, Teatralnaya ploshchad', 1 | 2005-06-22 | 2005-06-22 | 2005 | 1 | |
| Mikhailovsky Theatre | Mikhailovsky Theatre | Russia, St. Petersburg, Arts Square | 1878-11-20 | -- | 1878 | 1 | |
| Michailov Teatr | Michailov Teatr | Russia, St. Petersburg | 1897-09-24 | -- | 1897 | 1 | |
| Moskovskij Dramatičeskij Teatr pod rukovodstvom Armena Džigarchanjana | Moskovskij Dramatičeskij Teatr pod rukovodstvom Armena Džigarchanjana | Russia, Moskva, Lomonosovskij prospekt 17 | 2008-03-14 | 2009-05-17 | 2008 | 1 | |
| Moskovskij teatr imeni Leninskogo komsomola | Moskovskij teatr imeni Leninskogo komsomola | Russia, Moscow, ул. М. Дмитровка, 6 | 1939-04-20 | -- | 1939–2011 | 2 | |
| Moskovskij teatr Masterskaja P. Fomenko | Moskovskij teatr Masterskaja P. Fomenko | Russia, Moscow, Набережная Тараса Шевченко, 29 | 2004-12-19 | 2006-09-08 | 2004 | 1 | |
| Moskovski teatr na Taganke | Moskovski teatr na Taganke | Russia, Moscow, Zemlyanoy Val, 76/21 | 2013-06-12 | -- | 2013 | 1 | |
| Malaâ scena na Ordynke | Malaâ scena na Ordynke (Ordynka stage of Maly Theatre) | Russia, Moscow, Ulitsa Bol'shaya Ordynka, 69 | 2009-11-06 | 2009-11-08 | 2009 | 1 | |
| Moskovski dramatičeski teatr imeni A. Puškina | Moskovski dramatičeski teatr imeni A. Puškina | Russia, Moscow, Tverskoy Blvd, 23 | -- | 2019-05-18 | 2018 | 2 | |
| Moskóvskiy dramatícheskiy teátr imeni Marii Nikolayevny Yermólovoy | Moskóvskiy dramatícheskiy teátr imeni Marii Nikolayevny Yermólovoy (The Yermolova Theatre) | Russia, Moscow, Tverskaya ulitsa, 5/6 | 2022-09-16 | 2022-10-23 | 2022 | 1 | |
| Moskovskij dramatičeskij teatr imeni K. Stanislavskogo (Stanislavskij Elektroteater) | Moskovskij dramatičeskij teatr imeni K. Stanislavskogo (Stanislavsij Elektroteater) | Russia, Moscow, Tverskaya St, 23 | 1990-12- | -- | 1990 | 1 | |
| Malyj Teatr | Malyj Teatr (Maly Theatre) | Russia, Moscow, Theatre Square, 1 | 1892-01-14 | -- | 1892–1972 | 10 | |
| Maskavas Latviešu teātris | Maskavas Latviešu teātris | Russia, Moscow, Moscow | 1917-01-14 | -- | 1917 | 1 | |
| Moskovskij Hudožestvennyj akademičeskij teatr | Moskovskij Hudožestvennyj akademičeskij teatr (Moscow Art Theatre) | Russia, Moscow, Kamergerskiy Pereulok 3 | 1899-02-19 | -- | 1899–1960 | 8 | |
| Moskovskij teatr Sovremennik | Moskovskij teatr Sovremennik | Russia, Moscow, Chistoprudnyy bulvar, 19А | 1979-03-15 | -- | 1979–1989 | 2 | |
| Moscow Academic Mayakovsky Theatre | Moscow Academic Mayakovsky Theatre | Russia, Moscow, Bolshaya Nikitskaya Street, 19/13 | 2013-04-27 | -- | 2013 | 1 | |
| Moskovskij dramatičeskij teatr | Moskovskij dramatičeskij teatr | Russia, Moscow | 1957-09-18 | -- | 1957 | 1 | |
| Moskovskij dramatieeskij teatr imeni N. Baumana | Moskovskij dramatieeskij teatr imeni N. Baumana | Russia, Moscow | 1938-10-05 | -- | 1938 | 1 | |
| Moskovski teatr "Angažement" | Moskovski teatr "Angažement" | Russia, Moscow | 1998-- | -- | 1998 | 1 | |
| Moskovskii gastrolnyj teatr | Moskovskii gastrolnyj teatr | Russia, Moscow | 1957-- | -- | 1957 | 1 | |
| Moscow | Moscow | Russia, Moscow | 1904-04-29 | 2014-10-06 | 1904–2014 | 15 | |
| Moskovskij akademičeskij teatr imeni Vl. Majakovskogo | Moskovskij akademičeskij teatr imeni Vl. Majakovskogo | Russia, Moscow | 1999-04-27 | -- | 1999 | 1 | |
| Moskovskij literaturnyj teatr | Moskovskij literaturnyj teatr | Russia, Moscow | 1958-06- | -- | 1958 | 1 | |
| Moskovskij dramatičeskij teatr (Korša teatr) | Moskovskij dramatičeskij teatr (Korša teatr) | Russia, Moscow | 1931-03-23 | -- | 1931 | 1 | |
| M. Lermontov State Academic Russian Drama Theather | Russkiy Respublikanskiy Dramaticheskiy Teatr Im. M.yu. Lermontova (M. Lermontov State Academic Russian Drama Theather) | Russia, Abakan, Republic of Khakassia, Ulitsa Shchetinkina 12 | 2023-05-26 | 2023-05-27 | 2023 | 1 | |
| Murighiol | Murighiol | Romania, Murighiol | -- | -- | | | |
| Murfatlar (Basarabi) | Murfatlar (Basarabi) | Romania, Murfatlar (Basarabi) | -- | -- | | | |
| Moreni | Moreni | Romania, Moreni | -- | -- | | | |
| Moineşti | Moineşti | Romania, Moineşti | -- | -- | | | |
| Miorcani (Rădăuţi-Prut) | Miorcani (Rădăuţi-Prut) | Romania, Miorcani (Rădăuţi-Prut) | -- | -- | | | |
| Micşuneştii Mari | Micşuneştii Mari | Romania, Micşuneştii Mari | -- | -- | | | |
| Meteleu(Scutelnici) | Meteleu (Scutelnici) | Romania, Meteleu(Scutelnici) | -- | -- | | | |
| Mărculeşti | Mărculeşti | Romania, Mărculeşti | -- | -- | | | |
| Mărăşeşti | Mărăşeşti | Romania, Mărăşeşti | -- | -- | | | |
| Măcin | Măcin | Romania, Măcin | -- | -- | | | |
| Mitropolia Moldovei si Bucovinei | Mitropolia Moldovei si Bucovinei | Romania, Iasi, Bulevardul Ștefan cel Mare și Sfânt 16 | 2006-06-11 | -- | 2006 | 1 | |
| Mátray Béla Társulata | Mátray Béla Társulata | Romania, Arad | -- | -- | | | |
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