| Kleine Bühne, Landschaftlicher Redoutensaal | Kleine Bühne, Landschaftlicher Redoutensaal | Austria, Linz | 1919-11-19 | 1920-03-13 | 1919–1920 | 4 | |
| Komárno | Komárno | Slovak Republic, Komárno | 1926-11-19 | -- | 1926–1938 | 2 | |
| Kōchi Kenritsu Bijutsukan | Kōchi Kenritsu Bijutsukan (The Museum of Art, Kochi) | Japan, Kochi, 353-2 Takasu Kochi-City | 2008-03-15 | -- | 2008 | 1 | |
| Kuressaare | Kuressaare | Estonia, Kuressaare | -- | -- | | | |
| Koma Sahnesi | Koma Sahnesi (Koma Stage) | Turkey, Istanbul, Hasanpaşa Mah. Derici Zeynel Sokak No: 15/A KADIKÖY | 2020-01-24 | -- | 2020 | 1 | |
| Karlskrona Teater | Karlskrona Teater | Sweden, Karlskrona, Rådhusgatan | 1880-06-04 | 1886-01-08 | 1880–1936 | 7 | |
| Kingsway Theatre | Kingsway Theatre | England, London, Little Queen Street | 1911-04-22 | 1928-03-23 | 1911–1928 | 7 | |
| Kristianstads Teater | Kristianstads Teater | Sweden, Kristianstad | 1884-03-24 | 1884-03-25 | 1884–2010 | 6 | |
| Kyanarushiti gekijō | Kyanarushiti gekijō (Canal City Theater) | Japan, 812-0018 Fukuoka, Hakata Ward, Sumiyoshi, 1 Chome−2−1 | 2023-11-03 | 2023-11-05 | 2023 | 1 | |
| Komödie | Komödie | Austria, Vienna, Franz-Josefs-Kai 29 | 1947-11-25 | -- | 1947–1950 | 3 | |
| Karpenisi, Spercheiada, Malaisina and other cities | Karpenisi, Spercheiada, Malaisina and other cities | Greece, Karpenisi, Spercheiada, Malaisina and ot | 1981-12-14 | 1981-12-29 | 1981 | 1 | |
| Krajské divadlo Kolín | Krajské divadlo Kolín | Czech Republic, Kolín | 1976-04-30 | -- | 1976 | 1 | |
| Koninklijke Vlaamse Schouwburg | Koninklijke Vlaamse Schouwburg | Belgium, Bruxelles, Quai aux Pierres de Taille 7 | 1975-05-21 | 1990-06-10 | 1975–1990 | 3 | |
| Komm. kino | Komm. kino | Norway, Mysen | 1959-01-14 | 1959-01-15 | 1959 | 1 | |
| Kungliga Dramatiska Teatern (Dramaten) | Kungliga Dramatiska Teatern (Dramaten) | Sweden, Stockholm, Nybroplan | 1927-01-21 | 2024-04-13 | 1927–2024 | 22 | |
| Kjølnes ungdomsskole | Kjølnes ungdomsskole | Norway, Porsgrunn, Porsgrunn | 2005-11-01 | 2006-11-14 | 2005–2006 | 2 | |
| Klagenfurt | Klagenfurt | Austria, Klagenfurt | -- | -- | | | |
| Koriyama | Koriyama | Japan, Koriyama | -- | -- | | | |
| K. K. Hofburgtheater | K. K. Hofburgtheater | Austria, Vienna, Universitätsring | 1890-10-23 | 1923-11-20 | 1890–1918 | 61 | |
| Kelemen László Kamaraszínház | Kelemen László Kamaraszínház | Hungary, Kecskemét, Katona József tér 8. | 1996-02-02 | -- | 1996 | 1 | |
| Kulturhuset Fagernes | Kulturhuset Fagernes | Norway, Fagernes, Jernbanevegen 22 | 1984-04-06 | 2021-02-12 | 1984–2022 | 13 | |
| Kaiserliches Deutsches Hoftheater | Kaiserliches Deutsches Hoftheater St. Petersburg | Russia, Saint Petersburg | -- | -- | | | |
| Kulturbadet | Kulturbadet | Norway, Sandnessjøen, Torolv Kveldulvsons gate 10 | 2017-09-26 | 2022-10-19 | 2017–2022 | 5 | |
| Kultursalen, Arktisk Kultursenter | Kultursalen, Arktisk Kultursenter | Norway, Hammerfest, Strandgata 30 | 2009-12-01 | -- | 2009–2022 | 4 | |
| Kantonsschule Kollegium Schwyz | Kantonsschule Kollegium Schwyz | Switzerland, Schwyz, Kollegiumstrasse 24 | 2011-02-18 | 2011-02-26 | 2011 | 1 | |
| Kiln Theatre | Kiln Theatre | England, London, 269 Kilburn High Rd | 2019-05-30 | 2019-07-06 | 2019 | 1 | |
| Knickerbocker Theatre | Knickerbocker Theatre | United States of America, New York, 1396 Broadway (West 38th Street) | 1905-03-07 | 1905-03- | 1905 | 1 | |
| Kulturpfad Essen | Kulturpfad Essen | Germany, Essen | 2006-06-23 | -- | 2006 | 1 | |
| KCET (USA) | KCET (USA) | United States of America | 1990-01-01 | -- | 1990 | 1 | |
| Kirkenes | Kirkenes | Norway, Kirkenes | 1970-02-18 | -- | 1970–2009 | 7 | |
| Kurtheater Bad Elster | Kurtheater Bad Elster | Germany, Bad Elster | 1896-06-16 | -- | 1896 | 1 | |
| Kings Lynn Arts Centre | Kings Lynn Arts Centre | England, King's Lynn, Norfolk, 29 King Street | -- | -- | | | |
| Kid Ailac Art Hall | Kid Ailac Art Hall (Kid Ailack Art Hall) | Japan, Tokyo, 2-43 Matsubara, Setagaya-ku | 1998-06-20 | 1998-06-21 | 1998 | 1 | |
| Kangle ji Wenhua Shiwu Shu | Kangle ji Wenhua Shiwu Shu (Leisure and Cultural Services Department) | Hong Kong, Kwai Tsing District, 1-3 Pai Tau St | 2006-05-18 | 2006-06-04 | 2006 | 2 | |
| Kirkebygden Skole | Kirkebygden Skole | Norway, Enebakk, Enebakk | 2005-11-02 | -- | 2005 | 1 | |
| Komorní scéna Aréna | Komorní scéna Aréna | Czech Republic, Moravská Ostrava, 28. října 2 | 2014-03-22 | 2018-06-21 | 2014–2016 | 2 | |
| Kantiforum | Kantiforum | Switzerland, Wohlen, Allmendstrasse 26 | 2009-09-15 | -- | 2009 | 1 | |
| Königliche Schauspiele Hannover | Königliche Schauspiele Hannover | Germany, Hannover | 1878-09-14 | -- | 1878–1916 | 3 | |
| Kimen kulturhus | Kimen kulturhus | Norway, Stjørdal, Sandgata 15 | 2015-10-11 | 2020-10-27 | 2015–2022 | 4 | |
| Kieler Woche | Kieler Woche | Germany, Kiel | 1967-06- | -- | 1967 | 1 | |
| Kispest | Kispest | Hungary, Budapest | 1925-03-13 | -- | 1925 | 1 | |
| Kongliga Dramatiska Teatern (Gamla Dramaten) | Kongliga Dramatiska Teatern (Gamla Dramaten) | Sweden, Stockholm, Kungsträdgården | 1857-11-04 | 1905-04-19 | 1857–1903 | 40 | 1 |
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