| Krasnodar | Krasnodar | Russia, Krasnodar | 1899-05-20 | -- | 1899 | 1 | |
| Kelsey Theatre | Kelsey Theatre | United States of America, Princeton Junction, 1200 Old Trenton Rd | 2013-10-24 | 2013-10-24 | 2013 | 1 | |
| Kulturhaus Chur | Kulturhaus Chur | Switzerland, Chur, Bienenstrasse 7 | 2002-04-26 | 2002-04-27 | 2002 | 1 | |
| Koszalin | Koszalin | Poland, Koszalin | -- | -- | | | |
| Königliches Theater Cassel | Königliches Theater Cassel | Germany, Kassel | 1878-08-24 | -- | 1878–1889 | 2 | |
| Kantonsschule Kollegium Schwyz | Kantonsschule Kollegium Schwyz | Switzerland, Schwyz, Kollegiumstrasse 24 | 2011-02-18 | 2011-02-26 | 2011 | 1 | |
| Kjevik | Kjevik | Norway, Kjevik | 1971-02-26 | 1971-02-27 | 1971 | 2 | |
| Koomesh Theater City Hall | Koomesh Theater City Hall | Iran, Semnan, Qods St, Semnan Province, Semnan | 2018-10-08 | 2020-02-20 | 2018–2020 | 2 | |
| Kolozsvári Nemzeti Színház | Kolozsvári Nemzeti Színház | Romania, Cluj-Napoca | 1925-10-22 | 1925-12-19 | 1925–1930 | 4 | |
| Kampnagel | Kampnagel | Germany, Hamburg, Jarrestraße 20 | 1997-09-19 | 2014-01-12 | 1997–2014 | 2 | |
| Klagenfurt | Klagenfurt | Austria, Klagenfurt | -- | -- | | | |
| King's Theatre | King's Theatre | Scotland, Glasgow, 297 Bath St | 1965-03-12 | 1965-03-13 | 1965–1972 | 2 | |
| Kinder- und Jugendtheater Dortmund | Kinder- und Jugendtheater Dortmund | Germany, Dortmund, Sckellstraße 5-7, | 2000-03-04 | -- | 2000 | 1 | |
| Kentucky | Kentucky | United States of America, Kentucky | 1903-12-14 | 1903-12-15 | 1903 | 1 | |
| Kulturzentrum Großenhain | Kulturzentrum Großenhain | Germany, Grossenhain | 2009-01-18 | -- | 2009 | 1 | |
| Karasjok | Karasjok | Norway, Karasjok | 1970-09-03 | -- | 1970–2009 | 4 | |
| Kurhaus am Park | Kurhaus am Park | Germany, Isny, Schloßstraße 5 | 2006-02-19 | -- | 2006 | 1 | |
| Kvinesdal ungdomsskole | Kvinesdal ungdomsskole | Norway, Kvinesdal, Åsevegen | 2006-11-10 | -- | 2006 | 1 | |
| Konzert Theater Coesfeld | Konzert Theater Coesfeld | Germany | 2012-03-07 | 2012-03-07 | 2012 | 1 | |
| Kungliga Teatern | Kungliga Teatern | Sweden, Stockholm, Gustav Adolfs torg 2 | 1902-10-31 | 1966-10-21 | 1902–1966 | 5 | |
| Konzert und Festhalle | Konzert und Festhalle | Germany, Wörth/Rhein | 1980-03-19 | -- | 1980 | 1 | |
| Krúdy Kamaraszínház | Krúdy Kamaraszínház | Hungary, Nyíregyháza, Bessenyei tér 13 | 1995-12-15 | -- | 1995–2007 | 2 | |
| Kulturhaus Gotha | Kulturhaus Gotha | Germany, Gotha, Ekhofplatz 3, | 1993-06-11 | 1997-10-12 | 1993–1997 | 2 | |
| Komödie, Die | Die Komödie | Germany, Berlin, Kurfürstendamm 209 | 1933-02-23 | -- | 1933–1938 | 3 | |
| Korsør Theater | Korsør Theater | Denmark, Korsør | 1902-11-11 | -- | 1902–1907 | 3 | |
| Kuressaare | Kuressaare | Estonia, Kuressaare | -- | -- | | | |
| Kyrenia | Kyrenia | Cyprus, Kyrenia | 1973-03-06 | -- | 1973–1974 | 2 | |
| Kazalište Marina Držiča | Kazalište Marina Držiča | Croatia, Dubrovnik, Pred Dvorom 3 | -- | -- | | 1 | |
| Kreiskulturraum | Kreiskulturraum | Germany, Kronach, Siechenangerstraße 13 | 2002-11-15 | 2002-11-17 | 2002 | 1 | |
| Kulturzentrum Eisenstadt | Kulturzentrum Eisenstadt | Austria, Eisenstadt, Franz Schubert-Platz 6 | 2013-02-26 | -- | 2013 | 2 | |
| Komische Oper Berlin | Komische Oper Berlin | Germany, Berlin, Behrenstraße 55 | 2016-04-07 | 2016-04-08 | 2016 | 1 | |
| Kafeneio Dasopoulou | Kafeneio Dasopoulou | Greece, Larisa | 1910-10-02 | 1975-04-18 | 1910–1975 | 2 | |
| K3N Stadthalle Nürtingen | K3N Stadthalle Nürtingen | Germany, Nürtingen, Heiligkreuzstraße 4 | 2009-02-02 | -- | 2009–2015 | 2 | |
| Karlstad | Karlstad | Sweden, Karlstad | 1879-10-15 | 1991-03-15 | 1879–1991 | 9 | |
| Kokkolan Kaupunginteatteri | Kokkolan Kaupunginteatteri | Finland, Kokkola, Torikatu | 1921-08-23 | 1952-- | 1921–1983 | 3 | |
| Kvernhuset Ungdomskole | Kvernhuset Ungdomskole | Norway, Fredrikstad, Kvernhusveien 1 | 2006-11-09 | 2006-11-13 | 2006 | 1 | |
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