| Korsavadshallen | Korsavadshallen | Sweden, Simrishamn, Backgatan 50 | 2006-10-25 | -- | 2006 | 1 | |
| Kongliga Stora Teatern | Kongliga Stora Teatern | Sweden, Stockholm, Gustav Adolfs torg 2 | 1876-11-11 | 1886-03-29 | 1876–1888 | 7 | |
| Kungshamn | Kungshamn | Sweden, Kungshamn | 1989-10-30 | 1989-10-30 | 1989 | 1 | |
| Kragerø | Kragerø | Norway, Kragerø | 1889-02-20 | 1889-02-25 | 1889–1958 | 3 | |
| Koppang | Koppang | Norway, Koppang | -- | -- | | | |
| Krefeld | Krefeld | Germany, Krefeld | 2002-02-17 | -- | 2002 | 1 | |
| Kardam (Arman) | Кардам (Kardam) | Bulgaria, Kardam | -- | -- | | | |
| Karasjok | Karasjok | Norway, Karasjok | 1970-09-03 | -- | 1970–2009 | 4 | |
| Kulturzentrum Großenhain | Kulturzentrum Großenhain | Germany, Grossenhain | 2009-01-18 | -- | 2009 | 1 | |
| Kongsberg Musikkteater | Kongsberg Musikkteater | Norway, Kongsberg, Hasbergs vei 36 | 2019-09-17 | 2019-10-11 | 2019 | 1 | |
| Kalisz | Kalisz | Poland, Kalisz | 1908-09-30 | -- | 1908 | 1 | |
| Kristiania Norske Theater | Kristiania Norske Theater | Norway, Oslo, Møllergata 1 | 1858-11-24 | 1859-04-13 | 1858–1859 | 3 | |
| Kulturhuset | Kulturhuset | Norway, Molde, Kirkekråpet | 1986-04-07 | 2007-04-13 | 1986–2007 | 3 | |
| Kungliga Teatern | Kungliga Teatern | Sweden, Stockholm, Gustav Adolfs torg 2 | 1902-10-31 | 1966-10-21 | 1902–1966 | 5 | |
| Konzert Theater Coesfeld | Konzert Theater Coesfeld | Germany | 2012-03-07 | 2012-03-07 | 2012 | 1 | |
| Kråkerøy Ungdomsskole | Kråkerøy Ungdomsskole | Norway, Kråkerøy, Fredrikstad | 2006-10-31 | -- | 2006 | 1 | |
| Kaye Playhouse Hunter College | The Kaye Playhouse Hunter College | United States of America, New York, 695 Park Ave | 1997-10-24 | 1997-10-25 | 1997 | 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 | |
| Kent | Kent | England, Kent | -- | -- | | | |
| Koninklijke Stadsschouwburg | Koninklijke Stadsschouwburg | Belgium, Kortrijk, Schouwburgplein 14 | 1978-11-10 | -- | 1978 | 1 | |
| Kongreßhaus Villach | Kongreßhaus Villach | Austria, Villach, Europaplatz 1 | 2001-04-02 | -- | 2001 | 1 | |
| Kazalište Marina Držiča | Kazalište Marina Držiča | Croatia, Dubrovnik, Pred Dvorom 3 | -- | -- | | 1 | |
| Klicperovo divadlo (Studio Beseda) | Klicperovo divadlo (Studio Beseda) | Czech Republic, Hradec Králové, Dlouhá 99/9 | 1995-04-01 | -- | 1995 | 1 | |
| Kinimatografos Apollon | Kinimatografos Apollon | Greece, Livadeia | 1981-11-11 | -- | 1981 | 1 | |
| Kumla | Kumla | Sweden, Kumla | 1992-10- | -- | 1992 | 1 | |
| 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 | |
| Karlstad | Karlstad | Sweden, Karlstad | 1879-10-15 | 1991-03-15 | 1879–1991 | 9 | |
| K3N Stadthalle Nürtingen | K3N Stadthalle Nürtingen | Germany, Nürtingen, Heiligkreuzstraße 4 | 2009-02-02 | -- | 2009–2015 | 2 | |
| Kanonhallen | Kanonhallen | Denmark, Copenhagen, Østerfælled Torv 37 | 1994-11-02 | 1994-11-07 | 1994 | 1 | |
| Kungliga Dramatiska Teatern | Kungliga Dramatiska Teatern | Sweden, Stockholm, Nybroplan | 1908-03-07 | 2012-04-28 | 1908–2011 | 46 | |
| Komödie, Die | Die Komödie | Germany, Berlin, Kurfürstendamm 209 | 1933-02-23 | -- | 1933–1938 | 3 | |
| Kamara Színház | Kamara Színház | Hungary, Szombathely | 1924-07-10 | -- | 1924 | 1 | |
| Kulturhaus Dornbirn | Kulturhaus Dornbirn | Austria, Dornbirn | 1987-03-15 | -- | 1987–2006 | 2 | |
| Kulturhuset Blå Grotte | Kulturhuset Blå Grotte | Norway, Fredrikstad | 2009-09-30 | -- | 2009–2022 | 5 | |
| Kulturzentrum | Kulturzentrum | Germany, Weißenburg, Luitpoldstraße 9 | 2004-03-20 | -- | 2004 | 1 | |
| Karaganda Regional Academic Kazakh Drama Theater | Karaganda, in the S. Seifullin Karaganda Regional Academic Kazakh Drama Theater | Kazakhstan, Karaganda | 2023-12-20 | 2023-12-20 | 2023 | 1 | |
| Kyrkholmen | Kyrkholmen, Skellefteå | Sweden, Kyrkholmen, Skellefteå, Kyrkholmen | 1997-06-18 | 1997-07-13 | 1997 | 1 | |
| Kleist Forum | Kleist Forum | Germany, Frankfurt (Oder), Platz der Einheit 1 | 2006-12-09 | -- | 2006 | 1 | |
| Klein RaamTeater | 't Klein RaamTeater | Belgium, Antwerp | 1989-03-16 | 1989-04-29 | 1989 | 1 | |
| Kaliningrad | Kaliningrad | Russia, Kaliningrad | -- | -- | | | |
| Korjaamo Teatteri | Korjaamo Teatteri | Finland, Helsinki, Töölönkatu 51 a-b | 2016-08-23 | 2016-08-24 | 2016 | 1 | |
| Kulturzentrum Frankental | Kulturzentrum Frankental | Germany, Stolberg, Frankentalstraße 3 | 2002-12-04 | 2011-04-14 | 2002–2011 | 4 | |
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