| Kongliga Dramatiska Teatern (Gamla Dramaten) | Kongliga Dramatiska Teatern (Gamla Dramaten) | Sweden, Stockholm, Kungsträdgården | 1857-11-04 | 1905-04-19 | 1857–1903 | 40 | 1 |
| Komediehuset | Komediehuset | Norway, Bergen, Engen 39 | 1853-01-02 | 1928-10-05 | 1853–1928 | 92 | 1 |
| K. K. Hofburgtheater | K. K. Hofburgtheater | Austria, Vienna, Universitätsring | 1890-10-23 | 1923-11-20 | 1890–1918 | 61 | |
| Kulturhuset i Toftlund | Kulturhuset i Toftlund | Denmark, Toftlund, Søren Jensens Vej 2 | 2002-03-08 | -- | 2002 | 1 | |
| Krochttheater | Krochttheater | Netherlands, Rotterdam | 1987-11-08 | -- | 1987 | 1 | |
| Kino Grenå | Kino Grenå | Denmark, Grenå, Østergade 7 | 2002-10-08 | -- | 2002 | 1 | |
| Kulturbund Deutscher Juden | Kulturbund Deutscher Juden | Germany, Berlin | 1934-03-05 | -- | 1934 | 1 | |
| Kulturring Grosshansdorf | Kulturring Grosshansdorf | Germany, Grosshansdorf, Ihlendieksweg 23A | 2015-10-10 | 2015-10-10 | 2015 | 1 | |
| Kolozsvári Állami Magyar Színház | Kolozsvári Állami Magyar Színház | Romania, Cluj-Napoca | 1922-12-15 | 2019-06-07 | 1922–2020 | 18 | |
| Kleine Bühne | Kleine Bühne | Czech Republic, Prague | 1932-04-27 | -- | 1932 | 1 | |
| Kattateatret | Kattateatret | Norway, Oslo, Ullevålsveien 31 | 2003-01-07 | 2003-01-18 | 2003 | 1 | |
| Kongliga Stora Teatern | Kongliga Stora Teatern | Sweden, Stockholm, Gustav Adolfs torg 2 | 1876-11-11 | 1886-03-29 | 1876–1888 | 7 | |
| Kleist Forum | Kleist Forum | Germany, Frankfurt (Oder), Platz der Einheit 1 | 2006-12-09 | -- | 2006 | 1 | |
| Koppang | Koppang | Norway, Koppang | -- | -- | | | |
| Kinder- und Jugendtheater am Landestheater Tübingen | Kinder- und Jugendtheater am Landestheater Tübingen | Germany, Tübingen, Eberhardstraße 6 | 2010-04-10 | 2011-05-14 | 2010 | 1 | |
| Krajské divadlo Kolín | Krajské divadlo Kolín | Czech Republic, Kolín | 1976-04-30 | -- | 1976 | 1 | |
| Kom-Teatterin Kannatus | Kom-Teatterin Kannatus r.y. (KOM-teatteri) | Finland, Kapteeninkatu 26, 00140 Helsinki, Finland | 2023-09-07 | 2023-12-09 | 2023 | 1 | |
| Kongsberg Kino | Kongsberg Kino | Norway, Kongsberg, Nymoens Torg 3 | 1968-08-26 | 1993-02-16 | 1968–1993 | 3 | |
| Künstlerhaus Mousonturm | Künstlerhaus Mousonturm | Germany, Frankfurt am Main, Waldschmidtstraße 4 | 2000-12-16 | 2015-01-29 | 2000–2015 | 2 | |
| Kirkenes | Kirkenes | Norway, Kirkenes | 1970-02-18 | -- | 1970–2009 | 7 | |
| Kibble Palace, Botanic Gardens | Kibble Palace, Botanic Gardens | Ireland, Glasgow | 2024-06-20 | 2024-07-06 | 2024 | 1 | |
| Katoto Secondary School | Katoto Secondary School | Malawi, Katoto | 2006-06-04 | -- | 2006 | 1 | |
| Kinobrakka | Kinobrakka | Norway, Jørstadmoen | 1956-05-29 | -- | 1956 | 1 | |
| Königliche Schauspiele Hannover | Königliche Schauspiele Hannover | Germany, Hannover | 1878-09-14 | -- | 1878–1916 | 3 | |
| Kabinet múz | Kabinet múz | Czech Republic, Brno, Sukova 553/2 | 2004-02-14 | 2006-03-07 | 2004 | 1 | |
| Kenosha | Kenosha | United States of America, Kenosha | -- | -- | | | |
| Konzert-Aula Kamen | Konzert-Aula Kamen | Germany, Kamen, Hammer Str. 19 | 2001-02-19 | -- | 2001 | 1 | |
| Kragerø | Kragerø | Norway, Kragerø | 1889-02-20 | 1889-02-25 | 1889–1958 | 3 | |
| Kalmar Teater | Kalmar Teater | Sweden, Kalmar, Larmtorget | 1879-05-19 | 1880-05-28 | 1879–1905 | 8 | |
| Kinoen | Kinoen | Norway, Eidsvoll | 1963-01-13 | 1963-01-14 | 1963–1969 | 2 | |
| Karuss skole | Karuss skole | Norway, Kristiansand, Kristiansand | 2006-10-19 | -- | 2006 | 1 | |
| Kongsberg Musikkteater | Kongsberg Musikkteater | Norway, Kongsberg, Hasbergs vei 36 | 2019-09-17 | 2019-10-11 | 2019 | 1 | |
| Kragerø ungdomsskole | Kragerø ungdomsskole | Norway, Kragerø, Kragerø | 2006-10-30 | 2006-10-31 | 2006 | 1 | |
| Kulturhaus Osterfeld | Kulturhaus Osterfeld | Germany, Pforzheim, Osterfeldstraße 12 | 2007-03-29 | 2007-03-28 | 2007 | 1 | |
| Kulturni centar Zrenjanina | Kulturni centar Zrenjanina (Zrenjanin Cultural Center) | Serbia, Zrenjanin, Narodne omladine 1 | -- | -- | | | |
| Keble O’Reilly Theatre | Keble O’Reilly Theatre | England | -- | -- | | | |
| Kumla | Kumla | Sweden, Kumla | 1992-10- | -- | 1992 | 1 | |
| Kyoto | Kyoto | Japan, Kyoto | -- | -- | | | |
| Kunstforeningen GL STRAND | Kunstforeningen GL STRAND | Denmark, Copenhagen, Gammel Strand 48 | 2006-12-01 | 2006-12-02 | 2006 | 1 | |
| Krasnodar | Krasnodar | Russia, Krasnodar | 1899-05-20 | -- | 1899 | 1 | |
| Kammerspiele Rendsburg | Kammerspiele Rendsburg | Germany, Rendsburg, Hans-Heinrich-Beisenkötter-Platz 1 | 2011-05-10 | -- | 2011 | 1 | |
| Kaliningrad | Kaliningrad | Russia, Kaliningrad | -- | -- | | | |
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