| Kraljevsko slovensko gledališče Ljubljana | Kraljevsko slovensko gledališče Ljubljana | Slovenia, Ljubljana | 1919-03-08 | -- | 1919 | 1 | |
| Kulturhuset Ælvespeilet | Kulturhuset Ælvespeilet | Norway, Porsgrunn, Storgata 164 | 2024-09-10 | 2024-09-10 | 2024 | 1 | |
| Kvernhuset Ungdomsskole | Kvernhuset Ungdomsskole | Norway, Fredrikstad, Kvernhusveien 1 | 2006-11-09 | 2006-11-13 | 2006 | 1 | |
| Königliches Schauspielhaus | Königliches Schauspielhaus | Germany, Dresden, Ostra-Allee 27 | 1902-09-25 | 1921-04-19 | 1902–1918 | 25 | |
| Krasnapolsky | Krasnapolsky | Netherlands, Amsterdam | 1938-03-20 | -- | 1938 | 1 | |
| Kemin Kaupunginteatteri | Kemin Kaupunginteatteri | Finland, Kemi, Marina Takalon katu 3 | 1981-11-14 | -- | 1981 | 1 | |
| Katedralskolan | Katedralskolan | Sweden, Lund, Stora Södergatan 22 | 2006-10-20 | 2006-10-21 | 2006 | 1 | |
| Konferenscenter Safiren (Cosmos) | Konferenscenter Safiren (Cosmos) | Sweden, Katrineholm, Drottninggatan 19 | 2010-10-04 | -- | 2010 | 1 | |
| Kreeger Theater | Kreeger Theater | United States of America, Washington D.C., 1101 6th St SW | 1986-02-28 | 1986-04-20 | 1986 | 1 | |
| Kaiserlich-königliches Theater in Salzburg | Kaiserlich-königliches Theater in Salzburg | Austria, Salzburg, Makartplatz | 1881-07-12 | -- | 1881–1891 | 3 | |
| Kinoteatret | Kinoteatret | Norway, Askim, Kirkegata 5 | 1960-10-21 | -- | 1960–1977 | 4 | |
| Kirchgemeindehaus Langnau | Kirchgemeindehaus Langnau | Switzerland, Langnau im Emmental, Dorfbergstrasse 2, | 1992-03-12 | 1992-03-21 | 1992 | 1 | |
| Krokom | Krokom | Sweden, Krokom | 1989-09-27 | 1989-09-27 | 1989 | 1 | |
| Kokomo | Kokomo | United States of America, Kokomo | 1903-10-29 | 1903-10-29 | 1903 | 1 | |
| Küsnacht ZH | Küsnacht ZH | Switzerland | 2002-09-14 | -- | 2002 | 1 | |
| Kornerhalle Schwechat | Kornerhalle Schwechat | Austria, Schwechat, Rathausplatz 6 | 2004-02-20 | -- | 2004 | 1 | |
| Košice | Košice | Slovak Republic, Košice | 1889-12-21 | 1928-09-22 | 1889–1940 | 13 | |
| Kleines Theater Schillerstrasse | Kleines Theater Schillerstrasse | Germany, Geesthacht, Schillerstraße 33 | 2005-11-11 | -- | 2005 | 1 | |
| Kraevoj teatr drami | Kraevoj teatr drami | Russia, Habarovsk | 1955-10- | -- | 1955 | 1 | |
| Kinolokalet | Kinolokalet | Norway, Askim | 1952-02-18 | -- | 1952–1956 | 2 | |
| Kolvereid | Kolvereid | Norway, Kolvereid | 1995-02-22 | -- | 1995–2005 | 2 | |
| Kitchen Theatre | Kitchen Theatre | United States of America, Ithaca, 417 West State Street | 2003-04-17 | 2003-05-10 | 2003 | 1 | |
| Kardam (Arman) | Кардам (Kardam) | Bulgaria, Kardam | -- | -- | | | |
| Kotsøy | Kotsøy (Kotsoey) | Norway, Kotsøy | 1971-04-26 | -- | 1971 | 1 | |
| Kristiania Norske Theater | Kristiania Norske Theater | Norway, Oslo, Møllergata 1 | 1858-11-24 | 1859-04-13 | 1858–1859 | 3 | |
| Kultur im Beaulieu | Kultur im Beaulieu | Switzerland, Murten, Prehlstrasse 13 | 2009-01-17 | 2009-02-07 | 2009 | 1 | |
| Kleines Theater Bargteheide | Kleines Theater Bargteheide | Germany, Bargteheide, Hamburger Str. 3 | 2007-02-11 | -- | 2007 | 1 | |
| Kinokuniya hōru | Kinokuniya hōru (Kinokuniya Hall) | Japan, Tokyo, Kinokuniya Shinjuku Main Store 4F, 3-17-7 Shinjuku, Shinjuku-ku | 1965-12-07 | 1991-06-23 | 1965–1991 | 2 | |
| Kinoen, Longyearbyen | Kinoen, Longyearbyen | Norway, Svalbard | 1979-11-04 | -- | 1979 | 1 | |
| Kulturzentrum Saalbau | Kulturzentrum Saalbau | Germany, Homburg, Zweibrücker Straße 22 | 2018-03-15 | -- | 2018 | 1 | |
| Kis Komédia | Kis Komédia | Hungary, Budapest, Révay utca 18. | 1924-02-03 | 1924-03-23 | 1924 | 1 | |
| Kurhaus | Kurhaus | Germany, Bad Rappenau, Fritz-Hagner-Promenade 2 | 2006-02-14 | -- | 2006 | 1 | |
| Kulturfabriken | Kulturfabriken, Liljeholmen | Sweden, Stockholm, Liljeholmen | 1997-03-01 | -- | 1997 | 1 | |
| Kingsway Theatre | Kingsway Theatre | England, London, Little Queen Street | 1911-04-22 | 1928-03-23 | 1911–1928 | 7 | |
| Koma Sahnesi | Koma Sahnesi (Koma Stage) | Turkey, Istanbul, Hasanpaşa Mah. Derici Zeynel Sokak No: 15/A KADIKÖY | 2020-01-24 | -- | 2020 | 1 | |
| Korskirken | Korskirken | Norway, Bergen, Vågsbunnen | 2008-02-13 | 2008-02-14 | 2008 | 1 | |
| Kleine Bühne, Landschaftlicher Redoutensaal | Kleine Bühne, Landschaftlicher Redoutensaal | Austria, Linz | 1919-11-19 | 1920-03-13 | 1919–1920 | 4 | |
| Kwai Tsing Juyuan | Kwai Tsing Juyuan (Kwai Tsing Theatre Auditorium) | Hong Kong, Kwai Chung, 12 Hing Ning Rd, | 2013-06-28 | 2013-06-29 | 2013 | 1 | |
| Kamani Auditorium | Kamani Auditorium | India, New Delhi, 1, Copernicus Marg | 2006-03-08 | 2012-01-20 | 2006–2012 | 15 | |
| Keylor Grand | Keylor Grand | United States of America, Walla Walla | 1905-11-27 | 1905-11-27 | 1905 | 1 | |
| Karlsruhe | Karlsruhe | Germany, Karlsruhe | -- | -- | | | |
| Krefeld | Krefeld | Germany, Krefeld | 2002-02-17 | -- | 2002 | 1 | |
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