| Kongliga Dramatiska Teatern | Kongliga Dramatiska Teatern | Sweden, Stockholm, Kungsträdgården | 1857-11-04 | 1905-04-19 | 1857–1903 | 40 | 1 |
| Kulturring Grosshansdorf | Kulturring Grosshansdorf | Germany, Grosshansdorf, Ihlendieksweg 23A | 2015-10-10 | 2015-10-10 | 2015 | 1 | |
| Kvam Bygdahus | Kvam Bygdahus | Norway | 1963-02-27 | 1963-02-28 | 1963 | 1 | |
| Kangjiantang Theatre | Kangjiantang Theatre | China, Yuzhong, Chongqing, 181 Zhongshan 1st Road | 1948-02-08 | -- | 1948 | 1 | |
| Katedralskolan | Katedralskolan | Sweden, Lund, Stora Södergatan 22 | 2006-10-20 | 2006-10-21 | 2006 | 1 | |
| Kongliga Operan | Kongliga Operan | Sweden, Stockholm | 1892-03-15 | 1893-04-08 | 1892–1893 | 2 | |
| Kielce | Kielce | Poland, Kielce | 1908-09- | -- | 1908–1918 | 4 | |
| Kuressaare | Kuressaare | Estonia, Kuressaare | -- | -- | | | |
| Kilchberg ZH | Kilchberg ZH | Switzerland | 2002-09-13 | -- | 2002 | 1 | |
| Karlskrona | Karlskrona | Sweden, Karlskrona | 1936-10-21 | -- | 1936 | 1 | |
| Kongsvinger | Kongsvinger | Norway, Kongsvinger | 1952-03-11 | -- | 1952–2005 | 10 | |
| Kyrenia | Kyrenia | Cyprus, Kyrenia | 1973-03-06 | -- | 1973–1974 | 2 | |
| Karlbergsteatern | Karlbergsteatern | Sweden, Åmål, Schölingsgatan 7 | 2010-10-06 | -- | 2010 | 1 | |
| Kruseløkka ungdomsskole | Kruseløkka ungdomsskole | Norway, Sarpsborg, Hans Nielsen Hauges gate 33 | 2006-10-24 | 2006-10-25 | 2006 | 1 | |
| Kleines Theater am Markt | Kleines Theater am Markt | Germany, Wahlstedt, Waldstraße 16 | 2005-09-30 | -- | 2005 | 1 | |
| Kaimscher Konzertsaal | Kaimscher Konzertsaal | Germany, Munich, Türkenstraße 5 | 1896-02-27 | -- | 1896 | 1 | |
| Kitami Economic Centre | Kitami Economic Centre | Japan, Hokkaido, Kitami | 1980-07-23 | -- | 1980 | 1 | |
| Kalmar Teater | Kalmar Teater | Sweden, Kalmar, Larmtorget | 1879-05-19 | 1880-05-28 | 1879–1905 | 8 | |
| Klagenfurt | Klagenfurt | Austria, Klagenfurt | -- | -- | | | |
| Kvitsund Gymnas | Kvitsund Gymnas | Norway, Kviteseid, Jacob Naadlands Veg 2 | 2012-11-30 | 2012-12-01 | 2012 | 1 | |
| Kostromskoj dramatieeskij teatr imeni A. Ostrovskogo | Kostromskoj dramatieeskij teatr imeni A. Ostrovskogo | Russia, Kostroma | 1964-10-27 | -- | 1964 | 1 | |
| Kristianstads Teater | Kristianstads Teater | Sweden, Kristianstad | 1885-02-23 | -- | 1885–2010 | 5 | |
| Koblenz | Koblenz | Germany, Koblenz | 1923-09-01 | -- | 1923 | 1 | |
| Kelsey Theatre | Kelsey Theatre | United States, Princeton Junction, 1200 Old Trenton Rd | 2013-10-24 | 2013-10-24 | 2013 | 1 | |
| Kulturhuset | Kulturhuset | Norway, Tromsø, Erling Bangsunds plass 1 | 1993-03-21 | 2015-11-27 | 1993–2022 | 12 | |
| Kaiserliches Deutsches Hoftheater | Kaiserliches Deutsches Hoftheater St. Petersburg | Russia, Saint Petersburg | -- | -- | | | |
| Kaye Playhouse Hunter College | The Kaye Playhouse Hunter College | United States, New York, 695 Park Ave | 1997-10-24 | 1997-10-25 | 1997 | 1 | |
| Komaba Agora Theater | ΑΓΟPA (Komaba Agora Theater) (Komaba Agora Theater) | Japan, Meguro-ku, Komaba 1-11-13, Yubinbango | -- | -- | | | |
| Kungsör | Kungsör | Sweden, Kungsör | 1993-10-15 | -- | 1993 | 1 | |
| Koninklijke Vlaamse Schouwburg | Koninklijke Vlaamse Schouwburg | Belgium, Bruxelles, Quai aux Pierres de Taille 7 | 1975-05-21 | 1990-06-10 | 1975–1990 | 3 | |
| Keble O’Reilly Theatre | Keble O’Reilly Theatre | England | 2010-11-17 | 2010-11-20 | 2010 | 1 | |
| Krasnodar | Krasnodar | Russia, Krasnodar | 1899-05-20 | -- | 1899 | 1 | |
| Koomesh Theater City Hall | Koomesh Theater City Hall | Iran, Semnan, Qods St, Semnan Province, Semnan | 2018-10-08 | 2020-02-20 | 2018–2020 | 2 | |
| Kinoteatret | Kinoteatret | Norway, Askim, Kirkegata 5 | 1960-10-21 | -- | 1960–1977 | 4 | |
| Konzert und Festhalle | Konzert und Festhalle | Germany, Wörth/Rhein | 1980-03-19 | -- | 1980 | 1 | |
| Komorní scéna Aréna | Komorní scéna Aréna | Czech Republic, Moravská Ostrava, 28. října 2 | 2014-03-22 | 2018-06-21 | 2014–2016 | 2 | |
| Künstlerhaus Mousonturm | Künstlerhaus Mousonturm | Germany, Frankfurt am Main, Waldschmidtstraße 4 | 2000-12-16 | 2015-01-29 | 2000–2015 | 2 | |
| Kulturhuset | Kulturhuset | Norway, Kvinesdal | 1986-04-15 | -- | 1986–1997 | 3 | |
| Kultursalen, Arktisk Kultursenter | Kultursalen, Arktisk Kultursenter | Norway, Hammerfest, Strandgata 30 | 2009-12-01 | -- | 2009–2022 | 4 | |
| Kinder Space | Kinder Space | Japan, Tokyo, 5-13-39 Shirokanedai, Minato Ku | 2009-02-25 | 2009-03-01 | 2009 | 1 | |
| Kvinesdal Kulturhus | Kvinesdal Kulturhus | Norway, Kvinesdal | 1997-11-21 | 2015-09-20 | 1997–2015 | 5 | |
| Kispest | Kispest | Hungary, Budapest | 1925-03-13 | -- | 1925 | 1 | |
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