| Kinsarvik | Kinsarvik | Norway, Kinsarvik | 1966-09-01 | -- | 1966 | 1 | |
| Kemin Kaupunginteatteri | Kemin Kaupunginteatteri | Finland, Kemi, Marina Takalon katu 3 | 1981-11-14 | -- | 1981 | 1 | |
| Kulturhuset | Kulturhuset | Norway, Kvinesdal | 1986-04-15 | -- | 1986–1997 | 3 | |
| Königliches Schauspielhaus | Königliches Schauspielhaus | Germany, Dresden, Ostra-Allee 27 | 1902-09-25 | 1921-04-19 | 1902–1918 | 25 | |
| Kostroma | Kostroma | Russia, Kostroma | 1902-- | -- | 1902 | 1 | |
| Katedralskolan | Katedralskolan | Sweden, Lund, Stora Södergatan 22 | 2006-10-20 | 2006-10-21 | 2006 | 1 | |
| 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 | |
| Kantonsschule Kollegium Schwyz | Kantonsschule Kollegium Schwyz | Switzerland, Schwyz, Kollegiumstrasse 24 | 2011-02-18 | 2011-02-26 | 2011 | 1 | |
| Koblenz | Koblenz | Germany, Koblenz | 1923-09-01 | -- | 1923 | 1 | |
| KCET (USA) | KCET (USA) | United States | 1990-01-01 | -- | 1990 | 1 | |
| Kaye Playhouse Hunter College | The Kaye Playhouse Hunter College | United States, New York, 695 Park Ave | 1997-10-24 | 1997-10-25 | 1997 | 1 | |
| Košice | Košice | Slovak Republic, Košice | 1889-12-21 | 1928-09-22 | 1889–1940 | 13 | |
| Kid Ailac Art Hall | Kid Ailac Art Hall | Japan, Tokyo, 2-43 Matsubara, Setagaya-ku | 1998-06-20 | 1998-06-21 | 1998 | 1 | |
| Keble O’Reilly Theatre | Keble O’Reilly Theatre | England | 2010-11-17 | 2010-11-20 | 2010 | 1 | |
| Kulturhuset ASK | Kulturhuset ASK | Norway, Gjerdrum, Ask | 2001-11-02 | -- | 2001 | 1 | |
| Kotsøy | Kotsøy (Kotsoey) | Norway, Kotsøy | 1971-04-26 | -- | 1971 | 1 | |
| Kulturzentrum Güssing | Kulturzentrum Güssing | Austria, Güssing, Schulstraße 6 | 2004-02-28 | -- | 2004 | 1 | |
| Kongerød ungdomsskole | Kongerød ungdomsskole | Norway, Skien, Skien | 2006-09-27 | -- | 2006 | 1 | |
| Kitchen Theatre | Kitchen Theatre | United States, Ithaca, 417 West State Street | 2003-04-17 | 2003-05-10 | 2003 | 1 | |
| Kristiansund, Festiviteten | Festiviteten Kristiansund (Festiviteten) | Norway, Kristiansund, Kong Olav V's gate 1 | 1952-02-25 | 2014-04-11 | 1952–2014 | 15 | |
| Koncertpalæets store Sal | Koncertpalæets store Sal | Denmark, Copenhagen | 1894-12-11 | -- | 1894 | 1 | |
| Kurhaus | Kurhaus | Germany, Bad Schwalbach, Goethepl. 4 | 2007-03-21 | -- | 2007 | 1 | |
| King's Theatre | King's Theatre | Scotland, Glasgow, 297 Bath St | 1965-03-12 | 1965-03-13 | 1965–1972 | 2 | |
| Kinder Space | Kinder Space | Japan, Tokyo, 5-13-39 Shirokanedai, Minato Ku | 2009-02-25 | 2009-03-01 | 2009 | 1 | |
| Kongreßhaus Villach | Kongreßhaus Villach | Austria, Villach, Europaplatz 1 | 2001-04-02 | -- | 2001 | 1 | |
| Kulturfabriken | Kulturfabriken, Liljeholmen | Sweden, Stockholm, Liljeholmen | 1997-03-01 | -- | 1997 | 1 | |
| Kinder- und Jugendtheater Dortmund | Kinder- und Jugendtheater Dortmund | Germany, Dortmund, Sckellstraße 5-7, | 2000-03-04 | -- | 2000 | 1 | |
| Kvæfjord videregående skole | Kvæfjord videregående skole | Norway, Borkenes, Kvæfjord | 1997-11-21 | -- | 1997 | 1 | |
| Kamani Auditorium | Kamani Auditorium | India, New Delhi, 1, Copernicus Marg | 2006-03-08 | 2012-01-20 | 2006–2012 | 15 | |
| Kulturhuset | Kulturhuset | Norway, Molde, Kirkekråpet | 1986-04-07 | 2007-04-13 | 1986–2007 | 3 | |
| Kleine Bühne, Landschaftlicher Redoutensaal | Kleine Bühne, Landschaftlicher Redoutensaal | Austria, Linz | 1919-11-19 | 1920-03-13 | 1919–1920 | 4 | |
| Kungliga Dramatiska Teatern | Kungliga Dramatiska Teatern | Sweden, Stockholm, Nybroplan | 1908-03-07 | 2012-04-28 | 1908–2011 | 46 | |
| K. K. Hofburgtheater | K. K. Hofburgtheater | Austria, Vienna, Universitätsring | 1890-10-23 | 1923-11-20 | 1890–1918 | 61 | |
| Krefeld | Krefeld | Germany, Krefeld | 2002-02-17 | -- | 2002 | 1 | |
| Kelly's Theatre | Kelly's Theatre | England, Liverpool, Paradise Street | 1910-09-26 | -- | 1910 | 3 | |
| Kamara Színház | Kamara Színház | Hungary, Szombathely | 1924-07-10 | -- | 1924 | 1 | |
| Kirche Schönau | Kirche Schönau | Switzerland, Thun | 1985-11-29 | 1985-11-30 | 1985 | 1 | |
| Kulturzentrum Eisenstadt | Kulturzentrum Eisenstadt | Austria, Eisenstadt, Franz Schubert-Platz 6 | 2013-02-26 | -- | 2013 | 2 | |
| Klubbens teatersal | Klubbens teatersal | Norway, Tønsberg, Nedre Langgate 49 | 1973-11-06 | -- | 1973–1978 | 3 | |
| Kulturbund Deutscher Juden | Kulturbund Deutscher Juden | Germany, Berlin | 1934-03-05 | -- | 1934 | 1 | |
| Kulturhuset Zahl | Kulturhuset Zahl | Norway, Nesna, Nesna | 2009-04-29 | -- | 2009 | 1 | |
| Kisvárdai Várszínház és Művészetek Háza | Kisvárdai Várszínház és Művészetek Háza | Hungary, Kisvárda, Flórián tér 20 | 2018-06-28 | -- | 2018 | 1 | |
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