| Kleines Haus at Staatstheater Mainz | Kleines Haus at Staatstheater Mainz | Germany, Mainz, Tritonplatz | 1998-10-17 | 2001-06-28 | 1998–2001 | 2 | |
| Klyve ungdomsskole | Klyve ungdomsskole | Norway, Skien | 2006-03-02 | -- | 2006 | 2 | |
| Korshch Teatr | Korshch Teatr | Russia, Moscow | 1892-01-01 | -- | 1892–1904 | 2 | |
| Kammerspiele Bad Godesberg | Kammerspiele Bad Godesberg | Germany, Bonn - Bad Godesberg, Am Michaelshof 9 | 2000-02-26 | 2017-06-10 | 2000–2017 | 2 | |
| Königliches Theater Cassel | Königliches Theater Cassel | Germany, Kassel | 1878-08-24 | -- | 1878–1889 | 2 | |
| Kjevik | Kjevik | Norway, Kjevik | 1971-02-26 | 1971-02-27 | 1971 | 2 | |
| Karmøy Kino | Karmøy Kino | Norway, Kopervik, Stangalandgata 7 | 1969-09-22 | -- | 1969–2003 | 2 | |
| Kiskunfélegyháza | Kiskunfélegyháza | Hungary, Kiskunfélegyháza | 1922-04-03 | -- | 1922–1924 | 2 | |
| Kyrenia | Kyrenia | Cyprus, Kyrenia | 1973-03-06 | -- | 1973–1974 | 2 | |
| Klostersaal | Klostersaal | Germany, Forchheim, Klosterstraße 10 | 2004-03-23 | -- | 2004–2011 | 2 | |
| Kruisboog Cultural Center | Kruisboog Cultural Center | Belgium, Tienen, Minderbroedersstraat 15 | 1998-11-19 | -- | 1998–2007 | 2 | |
| Kafeneio Dasopoulou | Kafeneio Dasopoulou | Greece, Larisa | 1910-10-02 | 1975-04-18 | 1910–1975 | 2 | |
| Konzert- und Theatersaal, Nordhorn | Konzert- und Theatersaal, Nordhorn | Germany, Nordhorn, Ootmarsumer Weg 14 | 2010-03-12 | -- | 2010–2018 | 2 | |
| Kolvereid | Kolvereid | Norway, Kolvereid | 1995-02-22 | -- | 1995–2005 | 2 | |
| Komárno | Komárno | Slovak Republic, Komárno | 1926-11-19 | -- | 1926–1938 | 2 | |
| Künstlerhaus Mousonturm | Künstlerhaus Mousonturm | Germany, Frankfurt am Main, Waldschmidtstraße 4 | 2000-12-16 | 2015-01-29 | 2000–2015 | 2 | |
| Kulturbygget | Kulturbygget | Norway, Raufoss | 1981-11-05 | -- | 1981–1989 | 2 | |
| Kjølnes ungdomsskole | Kjølnes ungdomsskole | Norway, Porsgrunn, Porsgrunn | 2005-11-01 | 2006-11-14 | 2005–2006 | 2 | |
| Königliches Wilhelma-Theater | Königliches Wilhelma-Theater | Germany, Stuttgart | 1901-10-06 | 1901-10-08 | 1901–1907 | 2 | |
| Kulturhuset Anders | Kulturhuset Anders | Sweden, Höör, Stenskogsvägen 2 | 2001-08-03 | 2006-08-06 | 2001–2006 | 2 | |
| K3N Stadthalle Nürtingen | K3N Stadthalle Nürtingen | Germany, Nürtingen, Heiligkreuzstraße 4 | 2009-02-02 | -- | 2009–2015 | 2 | |
| Koiton Näyttämö | Koiton Näyttämö | Finland, Helsinki | 1922-01-06 | -- | 1922–1930 | 2 | |
| Kristinehamn | Kristinehamn | Sweden, Kristinehamn | 1936-10-07 | -- | 1936–1993 | 2 | |
| Kinosalen | Kinosalen | Norway, Orkanger | 1989-11-01 | -- | 1989–1993 | 2 | |
| Kurt-Hirschfeld-Forum | Kurt-Hirschfeld-Forum | Germany, Lehrte, Burgdorfer Straße 16 | 2001-02-20 | -- | 2001–2010 | 2 | |
| Kinolokalet | Kinolokalet | Norway, Askim | 1952-02-18 | -- | 1952–1956 | 2 | |
| Key Theatre | Key Theatre | England, Peterborough, Embankment Road | 2014-02-05 | 2014-10-01 | 2014 | 2 | |
| Karlstads Teater | Karlstads Teater | Sweden, Karlstad | 1880-09-21 | -- | 1880–1886 | 2 | |
| Koomesh Theater City Hall | Koomesh Theater City Hall | Iran, Semnan, Qods St, Semnan Province, Semnan | 2018-10-08 | 2020-02-20 | 2018–2020 | 2 | |
| Kajaanin kaupunginteatteri | Kajaanin kaupunginteatteri | Finland, Kajaani, Kauppakatu 14 | 1976-09-16 | 2010-05-20 | 1976–2009 | 2 | |
| Kongliga Operan | Kongliga Operan | Sweden, Stockholm | 1892-03-15 | 1893-04-08 | 1892–1893 | 2 | |
| Kalita Humphreys Theater | Kalita Humphreys Theater | United States, Dallas, 3636 Turtle Creek Blvd | 2001-09-05 | 2018-07-07 | 2001–2018 | 2 | |
| Kimen kulturhus | Kimen kulturhus | Norway, Stjørdal, Sandgata 15 | 2015-10-11 | 2020-10-27 | 2015–2020 | 3 | |
| Karpedammen Scene | Karpedammen Scene | Norway, Oslo, Akershus festning | 2017-06-08 | 2019-06-16 | 2017–2019 | 3 | |
| Kvinesdal | Kvinesdal | Norway, Kvinesdal | 1991-09-26 | -- | 1991–2005 | 3 | |
| Kulturbadet | Kulturbadet | Norway, Sandnessjøen, Torolv Kveldulvsons gate 10 | 2017-09-26 | 2020-10-19 | 2017–2020 | 3 | |
| Klubbens teatersal | Klubbens teatersal | Norway, Tønsberg, Nedre Langgate 49 | 1973-11-06 | -- | 1973–1978 | 3 | |
| Kolvereid Samfunnshus | Kolvereid Samfunnshus | Norway, Kolvereid | 1961-02-11 | -- | 1961–1989 | 3 | |
| Kongsberg Kino | Kongsberg Kino | Norway, Kongsberg, Nymoens Torg 3 | 1968-08-26 | 1993-02-16 | 1968–1993 | 3 | |
| Kulturhuset Viften | Kulturhuset Viften | Denmark, Rødovre, Rødovre Parkvej 130 | 2002-03-21 | 2004-11-10 | 2002–2004 | 3 | |
| Kaiserlich-königliches Theater in Salzburg | Kaiserlich-königliches Theater in Salzburg | Austria, Salzburg, Makartplatz | 1881-07-12 | -- | 1881–1891 | 3 | |
| Kulturhuset | Kulturhuset | Norway, Kvinesdal | 1986-04-15 | -- | 1986–1997 | 3 | |
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