| Kotkan Kaupunginteatteri | Kotkan Kaupunginteatteri | Finland, Kotka, Keskuskatu 15 | 1938-03-12 | 2006-12-14 | 1938–2012 | 9 | |
| Königsberg | Königsberg | Germany, Königsberg | -- | -- | | | |
| Kalisz | Kalisz | Poland, Kalisz | 1908-09-30 | -- | 1908 | 1 | |
| Kungsbacka Teater | Kungsbacka Teater | Sweden, Kungsbacka, Gymnasiegatan 42, Teatergatan | 2010-11-30 | -- | 2010 | 1 | |
| Kurtheater Bad Homburg | Kurtheater Bad Homburg | Germany, Bad Homburg vor der Höhe, Louisenstraße 58 | 2017-02-02 | 2023-06-20 | 2017–2023 | 2 | |
| Kinoen | Kinoen | Norway, Rjukan | 1952-02-07 | 1963-01-25 | 1952–1971 | 6 | |
| Kakuza | Kakuza (Kadoza Theatre) | Japan, Osaka | 1928-07-23 | -- | 1928 | 1 | |
| Kråkerøy Ungdomsskole | Kråkerøy Ungdomsskole | Norway, Kråkerøy, Fredrikstad | 2006-10-31 | -- | 2006 | 1 | |
| Kleines Theater | Kleines Theater | Germany, Landshut, Bauhofstraße 1 | 2006-02-10 | 2011-04-30 | 2006–2011 | 3 | |
| Kanonhallen | Kanonhallen | Denmark, Copenhagen, Østerfælled Torv 37 | 1994-11-02 | 1994-11-07 | 1994 | 1 | |
| Kammerspiele Wien | Kammerspiele Wien | Austria, Wien | 1927-03-17 | -- | 1927 | 1 | |
| Kōchi Kenritsu Bijutsukan | Kōchi Kenritsu Bijutsukan (The Museum of Art, Kochi) | Japan, Kochi, 353-2 Takasu Kochi-City | 2008-03-15 | -- | 2008 | 1 | |
| Kammerspiele Schleswig | Kammerspiele Schleswig | Germany, Schleswig, Lollfuß 49-51 | 2011-03-19 | 2012-01-07 | 2011–2012 | 2 | |
| Kings Lynn Arts Centre | Kings Lynn Arts Centre | England, King's Lynn, Norfolk, 29 King Street | -- | -- | | | |
| Klosterøya, PM7 | Klosterøya, PM7 | Norway, Skien, Union bruk | 2009-06-03 | 2015-03-14 | 2009–2015 | 6 | |
| KC Vooruit | KC Vooruit | Belgium, Gent, Sint-Pietersnieuwstraat 23 | 1994-03-25 | 2005-02-16 | 1994–2005 | 5 | |
| Kiel | Kiel | Germany, Kiel | 1952-01-11 | 1952-01-12 | 1952 | 1 | |
| Kino Kultura | Kino Kultura (Кино Култура) | Macedonia, Skopje, Luj Paster 3 | 2017-12-24 | -- | 2017 | 1 | |
| Kimen kulturhus | Kimen kulturhus | Norway, Stjørdal, Sandgata 15 | 2015-10-11 | 2020-10-27 | 2015–2022 | 4 | |
| Königliches Schloßtheater Ansbach | Königliches Schloßtheater Ansbach | Germany, Ansbach | 1894-01-05 | -- | 1894 | 1 | |
| Königliches Hof- und National-Theater | Königliches Hof- und National-Theater | Germany, Munich, Max-Joseph-Platz 2 | 1876-04-10 | -- | 1876–1907 | 10 | |
| King's College, Taunton | King's College, Taunton | England, Somerset, South Rd | 2008-03-29 | 2008-04-05 | 2008 | 1 | |
| Kongress-Saal AVALON Hotelpark Königshof | Kongress-Saal AVALON Hotelpark Königshof | Germany, Königslutter, Braunschweiger Str. 21A | 2007-02-18 | -- | 2007 | 1 | |
| Kotkan Kaupunginteatteri (Studio) | Kotkan Kaupunginteatteri (Studio) | Finland, Kotka | 1982-03-27 | -- | 1982 | 1 | |
| Koriyama | Koriyama | Japan, Koriyama | -- | -- | | | |
| Kapitelberget | Kapitelberget | Norway, Skien, Christian Magnus Falsens gate | 1983-05-30 | 1983-06-12 | 1983 | 2 | |
| Kiskunhalas | Kiskunhalas | Hungary, Kiskunhalas | 1899-12-12 | -- | 1899–1935 | 3 | |
| Kungliga Dramatiska Teatern (Dramaten) | Kungliga Dramatiska Teatern (Dramaten) | Sweden, Stockholm, Nybroplan | 1927-01-21 | 2024-04-13 | 1927–2024 | 22 | |
| Kunstbanken Hedmark Kunstsenter | Kunstbanken Hedmark Kunstsenter | Norway, Hamar, Parkgata 21 | 1998-11-15 | -- | 1998 | 1 | |
| Karpedammen Scene | Karpedammen Scene | Norway, Oslo, Akershus festning | 2017-06-08 | 2019-06-16 | 2017–2019 | 3 | |
| Kulturhuset Fagernes | Kulturhuset Fagernes | Norway, Fagernes, Jernbanevegen 22 | 1984-04-06 | 2021-02-12 | 1984–2022 | 13 | |
| Komm. kino | Komm. kino | Norway, Oppdal | 1952-02-24 | -- | 1952–1971 | 5 | |
| Kinolokalet | Kinolokalet | Norway, Dombås | 1956-05-31 | -- | 1956–1965 | 3 | |
| Kilden Teater- og Konserthus | Kilden Teater- og Konserthus | Norway, Kristiansand, Sjølystveien 2 | 2012-09-27 | 2025-09-04 | 2012–2025 | 14 | |
| Karasjok | Karasjok | Norway, Karasjok | 1970-09-03 | -- | 1970–2009 | 4 | |
| Kipos tis Esvekias | Kipos tis Esvekias | Egypt, Cairo | 1939-12-15 | -- | 1939 | 2 | |
| Keble O'Reilly | Keble O'Reilly Theatre | England, Oxford, Blackhall Road, Oxford, OX1 3PG | 2010-11-17 | 2023-11-11 | 2010–2023 | 2 | |
| Kulturhuset Anders | Kulturhuset Anders | Sweden, Höör, Stenskogsvägen 2 | 2001-08-03 | 2006-08-06 | 2001–2006 | 2 | |
| Kärnten | Kärnten | Austria | -- | -- | | | |
| Kungliga Teatern | Kungliga Teatern | Sweden, Stockholm, Gustav Adolfs torg 2 | -- | -- | | | |
| Kulturhuset Ælvespeilet | Kulturhuset Ælvespeilet | Norway, Porsgrunn, Storgata 164 | 2024-09-10 | 2024-09-10 | 2024 | 1 | |
| Kulturpfad Essen | Kulturpfad Essen | Germany, Essen | 2006-06-23 | -- | 2006 | 1 | |
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