| Klostersaal | Klostersaal | Germany, Forchheim, Klosterstraße 10 | 2004-03-23 | -- | 2004–2011 | 2 | |
| Kvernhuset Ungdomsskole | Kvernhuset Ungdomsskole | Norway, Fredrikstad, Kvernhusveien 1 | 2006-11-09 | 2006-11-13 | 2006 | 1 | |
| Kőszeg | Kőszeg | Hungary, Kőszeg | 1923-04-18 | -- | 1923–1937 | 8 | |
| Königliches Schauspielhaus | Königliches Schauspielhaus | Germany, Dresden, Ostra-Allee 27 | 1902-09-25 | 1921-04-19 | 1902–1918 | 25 | |
| Kitchen Theatre | Kitchen Theatre | United States of America, Ithaca, 417 West State Street | 2003-04-17 | 2003-05-10 | 2003 | 1 | |
| Kinn | Kinn | Norway, Kinn, Florø | 2005-06-18 | -- | 2005 | 1 | |
| Key Theatre | Key Theatre | England, Peterborough, Embankment Road | 2014-02-05 | 2014-10-01 | 2014 | 2 | |
| Kurhaus am Park | Kurhaus am Park | Germany, Isny, Schloßstraße 5 | 2006-02-19 | -- | 2006 | 1 | |
| Kellertheater Hamburg | Kellertheater Hamburg | Germany, Hamburg, Johannes-Brahms-Platz 1 | 2018-10-19 | -- | 2018 | 1 | |
| Kursaal Bad Honnef | Kursaal Bad Honnef | Germany, Bad Honnef, Hauptstraße 28 | 2007-03-14 | -- | 2007 | 1 | |
| Kammerspiele Rendsburg | Kammerspiele Rendsburg | Germany, Rendsburg, Hans-Heinrich-Beisenkötter-Platz 1 | 2011-05-10 | -- | 2011 | 1 | |
| KXT on Broadway | KXT on Broadway | Australia, Sydney, 181 Broadway, Ultimo NSW | 2024-10-18 | 2024-11-02 | 2024 | 1 | |
| Kasernescenen | Kasernescenen | Denmark, Aarhus, Langelandsgade 139 | 2006-05-18 | 2006-05-20 | 2006 | 1 | |
| Kulturfabrikken Sortland | Kulturfabrikken Sortland | Norway, Sortland, Strandgata 1 | 2018-04-14 | -- | 2018 | 1 | |
| Kjevik | Kjevik | Norway, Kjevik | 1971-02-26 | 1971-02-27 | 1971 | 2 | |
| Kalocsa | Kalocsa | Hungary, Kalocsa | 1937-03-27 | -- | 1937–1941 | 3 | |
| Kolkata | Kolkata | India, West Bengal | 1950-11-26 | 2019-07- | 1950–2019 | 3 | |
| Kolvereid | Kolvereid | Norway, Kolvereid | 1995-02-22 | -- | 1995–2005 | 2 | |
| Kalmar | Kalmar | Sweden, Kalmar | 1936-10-22 | 2018-05-16 | 1936–2018 | 4 | |
| Ke Center for Contemporary Arts | Ke Center for Contemporary Arts | China, Shanghai, 613 Kaixuan Rd | 2009-10-14 | 2009-10-18 | 2009 | 1 | |
| Kōtō kōkaidō tiara kōtō | Kōtō kōkaidō tiara kōtō (Tiara Koto) | Japan, Tokyo, 2 Chome-28-36 Sumiyoshi, Koto | 2006-10-14 | 2006-10-15 | 2006 | 1 | |
| Kinnaird College | Kinnaird College | Pakistan, Lahore, Near Canal bank، Jail Road، G.O.R. - I | 2018-05-10 | 2018-05-13 | 2018 | 1 | |
| Kingsway Theatre | Kingsway Theatre | England, London, Little Queen Street | 1911-04-22 | 1928-03-23 | 1911–1928 | 7 | |
| Kyrenia | Kyrenia | Cyprus, Kyrenia | 1973-03-06 | -- | 1973–1974 | 2 | |
| Karlskoga | Karlskoga | Sweden | 2002-09-05 | -- | 2002 | 1 | |
| K. K. Hof-Burgtheater | K. K. Hof-Burgtheater | Austria, Vienna, Michaelerplatz | 1876-10-26 | 1876-12-29 | 1876 | 1 | |
| Korskirken | Korskirken | Norway, Bergen, Vågsbunnen | 2008-02-13 | 2008-02-14 | 2008 | 1 | |
| Kaposvár | Kaposvár | Hungary, Kaposvár | 1890-08-26 | 1928-10-29 | 1890–1935 | 20 | |
| Konserthusteatern Karlskrona | Konserthusteatern Karlskrona | Sweden, Karlskrona, Stortorget 16 | 2010-12-09 | -- | 2010 | 1 | |
| Kleine Bühne, Landschaftlicher Redoutensaal | Kleine Bühne, Landschaftlicher Redoutensaal | Austria, Linz | 1919-11-19 | 1920-03-13 | 1919–1920 | 4 | |
| Kulturhuset Hagelund | Kulturhuset Hagelund | Norway, Trysil, Storvegen 5 | 1978-12-02 | 2015-10-17 | 1978–2015 | 2 | |
| Kokkolan Kaupunginteatteri | Kokkolan Kaupunginteatteri | Finland, Kokkola, Torikatu | 1921-08-23 | 1952-- | 1921–1983 | 3 | |
| Kvartersteatern | Kvartersteatern | Sweden, Norrköping, Tunnbindaregatan 37 | 2020-03-06 | -- | 2020 | 1 | |
| Kurhaus Freudenstadt | Kurhaus Freudenstadt | Germany, Freudenstadt, Lauterbadstrasse 5 | 2017-01-25 | -- | 2017 | 1 | |
| Kungälv | Kungälv | Sweden, Kungälv | 1960-10-16 | -- | 1960 | 1 | |
| Kolpinghaus | Kolpinghaus | Germany, Paderborn | 1980-02-28 | -- | 1980 | 1 | |
| Kristianstads Teater | Kristianstads Teater | Sweden, Kristianstad | 1884-03-24 | 1884-03-25 | 1884–2010 | 6 | |
| Kragerø kirke | Kragerø kirke | Norway, Kragerø | 2016-11-03 | -- | 2016 | 1 | |
| Komödie | Komödie | Austria, Vienna, Franz-Josefs-Kai 29 | 1947-11-25 | -- | 1947–1950 | 3 | |
| Kärntner Grenzlandtheater Klagenfurt | Kärntner Grenzlandtheater Klagenfurt | Austria, Klagenfurt | 1942-01-09 | -- | 1942 | 1 | |
| Kikinda | Kikinda | Serbia, Kikinda | 1906-10-28 | -- | 1906 | 1 | |
| Krajské divadlo Kolín | Krajské divadlo Kolín | Czech Republic, Kolín | 1976-04-30 | -- | 1976 | 1 | |
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