| Theatro Oasis | Theatro Oasis | Cyprus, Nikosia | 1938-09-25 | -- | 1938 | 1 | |
| Theatro Odeio | Theatro Odeio | Greece, Rethymno, Crete | 2005-01-11 | 2005-01-12 | 2005 | 1 | |
| Theatro Odeion | Theatro Odeion | Turkey, Istanbul | 1899-03-11 | 1905-03-21 | 1899–1909 | 6 | |
| Theatro Odou Antioxeias | Theatro Odou Antioxeias (Antiochia Street Teater) | Greece, Athens | 2006-05-04 | 2006-05-28 | 2006 | 1 | |
| Theatro Olympia | Theatro Olympia | Greece, Chania, Crete | 1939-04-24 | 1939-04-25 | 1939 | 1 | |
| Theatro Olympia | Theatro Olympia | Greece, Pyrgos | 1912-09-02 | -- | 1912–1916 | 3 | |
| Theatro Opseis | Theatro Opseis | Greece, Karditsa | 2007-04-19 | -- | 2007 | 1 | |
| Theatro Orfefs | Theatro Orfefs | Greece, Athens | 1956-01-28 | 1956-01-29 | 1956 | 1 | |
| Theatro Orfefs | Theatro Orfefs (Orpheus Theatre) | Greece, Larisa | 1951-03-15 | 1951-03-16 | 1951 | 1 | |
| Theatro Orfefs | Theatro Orfefs (Theater Orpheus) | Greece, Volos | 1896-07-13 | -- | 1896 | 1 | |
| Theatro Palaias Ilektrikis | Theatro Palaias Ilektrikis (Old Electric Theater) | Greece, Volos | 2009-11-13 | 2009-12-13 | 2009 | 1 | |
| Theatro Palladio | Theatro Palladio | Greece, Ioannina | 1956-01-27 | 1956-01-28 | 1956 | 1 | |
| Theatro Pallas | Theatro Pallas | Greece, Thessaloniki | 1939-05-08 | 1940-05-31 | 1939–1940 | 3 | |
| Theatro Pallas | Theatro Pallas | Greece, Athens | 1939-10-03 | 1939-10-18 | 1939 | 1 | |
| Theatro Panellinion | Theatro Panellinion | Greece, Athens | 1909-01-13 | 1993-04-11 | 1909–1993 | 5 | |
| Theatro Pantheon | Theatro Pantheon | Greece, Mytilini | 1934-07-27 | -- | 1934 | 1 | |
| Theatro Pantheon | Theatro Pantheon | Greece, Thessaloniki | 1924-09-18 | 1924-10-05 | 1924–1925 | 4 | |
| Theatro Paradeisos | Theatro Paradeisos | Greece, Patra | 1918-08- | -- | 1918 | 1 | |
| Theatro Polytheama | Theatro Polytheama (Polytheama theater) | Greece, Pireus | 1898-08-16 | 1913-02-14 | 1898–1913 | 3 | |
| Theatro Polytheama | Theatro Polytheama | Greece, Volos | 1913-10-17 | -- | 1913 | 1 | |
| Théatro Poreía | Théatro Poreía (Poreia theatre) | Greece, Athens, Trikorfon 3, Athina 104 33, Hellas | 2018-05-25 | 2024-01-14 | 2018–2023 | 4 | |
| Theatro Porta | Theatro Porta (Porta Theatre) | Greece, Athens | 2012-06-14 | 2012-10-07 | 2012 | 1 | |
| Theatro Poulakaki | Theatro Poulakaki (Poulakaki Theatre) | Greece, Iraklion, Crete | 1939-04-13 | -- | 1939 | 1 | |
| Theatro Praxis | Theatro Praxis | Cyprus, Limassol | 2003-03-07 | -- | 2003 | 1 | |
| Theatro Proskinio | Theatro Proskinio | Greece, 104 33, Athens, Kapnokoptiriou 8 | 2025-01-30 | 2025-03-29 | 2025 | 1 | |
| Theatro Pyli | Theatro Pyli (Gate Theatre) | Greece, Athens | 1988-01-08 | -- | 1988 | 1 | |
| Théatro Radar | Théatro Radar (Radar Theatre) | Greece, Athina 117 44, Πλατεία Αγίου Ιωάννου και, Pitheou 93 | 2024-11-08 | 2025-05-11 | 2024 | 1 | |
| Theatro Rematias | Theatro Rematias (Rematia Theater) | Greece, Athens | 1987-07-06 | 1987-07-07 | 1987 | 1 | |
| Theatro Rex | Theatro Rex | Greece, Komotini | 1940-02- | -- | 1940 | 2 | |
| Theatro Rex | Theatro Rex (Rex Theatre) | Greece, Athens, 48 Panepistimiou Street, Athens | 1945-11-07 | 2025-04-13 | 1945–2025 | 2 | |
| Théatro Rex | Théatro Rex (Rex Theatre) | Greece, Athina, Panepistimiou 48 | 2016-11-11 | 2016-12-11 | 2016 | 1 | |
| Theatro São Pedro | Theatro São Pedro | Brazil, São Paulo, R. Barra Funda, 171 | 2018-10-07 | -- | 2018 | 1 | |
| Theatro Settas "Nikos Papakonstantinou" | Theatro Settas "Nikos Papakonstantinou" | Greece, Setta, Evia, Ano Setta | 2006-08-05 | 2006-08-05 | 2006 | 1 | |
| Theatro Sigchrono Athinas | Theatro Sigchrono Athinas (Modern Theatre) | Greece, Athens, Evmolpidon 39 | 2004-12-25 | 2005-04-24 | 2004 | 1 | |
| Théatro Simeío | Théatro Simeío (Theater Point) | Greece, Athens, Harilaou Trikoupi 4, Kallithea | 2015-03-06 | 2015-04-05 | 2015 | 1 | |
| Theatro Sporting Club | Theatro Sporting Club | Turkey, Izmir | 1909-03-03 | -- | 1909–1920 | 4 | |
| Theatro sto palio typografeio tou Empros í Théatro EMPROS | Theatro sto palio typografeio tou Empros í Théatro EMPROS (Theater at the Old Printing Office of Embros or EMBROS Theater) | Greece, Athina, P.C., Palamidou Riga 2 | 1991-12-20 | 1995-04-16 | 1991–1994 | 2 | |
| Theatro Syntagmatos | Theatro Syntagmatos | Turkey, Samsun | 1909-12-15 | -- | 1909 | 1 | |
| Theatro Technis | Theatro Technis | England, London, 26 Crowndale Rd | 2004-10-19 | 2018-12-19 | 2004–2017 | 4 | |
| Theatro Technon | Theatro Technon | Greece, Larisa, Pineiou 9 | 2004-12-17 | 2005-01-30 | 2004 | 1 | |
| Theatro Thessalonikis | Theatro Thessalonikis | Greece, Thessaloniki | 2005-03-11 | 2005-04-24 | 2005 | 1 | |
| Theatro Thision | Theatro Thision (Thision Theatre) | Greece, Athens | 2013-11-21 | 2014-02-07 | 2013 | 1 | |
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