| Koninklijke Stadsschouwburg | Koninklijke Stadsschouwburg | Belgium, Kortrijk, Schouwburgplein 14 | 1978-11-10 | -- | 1978 | 1 | |
| Kurtheater Bad Kreuznach | Kurtheater Bad Kreuznach | Germany, Bad Kreuznach | 1895-08-26 | -- | 1895 | 1 | |
| Kalisz | Kalisz | Poland, Kalisz | 1908-09-30 | -- | 1908 | 1 | |
| Kungliga Dramatiska Teatern | Kungliga Dramatiska Teatern | Sweden, Stockholm, Nybroplan | 1902-10-31 | 2012-04-28 | 1902–2011 | 49 | |
| Kardam (Arman) | Кардам (Kardam) | Bulgaria, Kardam | -- | -- | | | |
| Kulturzentrum Großenhain | Kulturzentrum Großenhain | Germany, Grossenhain | 2009-01-18 | -- | 2009 | 1 | |
| Kh Kala Soudha | Kh Kala Soudha | India, Hanumantha Nagar Bangalore, Ramanjaneya Temple Compound | 2019-01-18 | 2019-01-18 | 2019 | 1 | |
| Kråkerøy Ungdomsskole | Kråkerøy Ungdomsskole | Norway, Kråkerøy, Fredrikstad | 2006-10-31 | -- | 2006 | 1 | |
| Kristiania Norske Theater | Kristiania Norske Theater | Norway, Oslo, Møllergata 1 | 1858-11-24 | 1859-04-13 | 1858–1859 | 3 | |
| Kallinge | Kallinge | Sweden, Kallinge | 1967-04- | -- | 1967 | 1 | |
| Komárom | Komárom | Hungary, Komárom | 1925-03-25 | -- | 1925–1935 | 2 | |
| Kammerspiele Seeb | Kammerspiele Seeb | Switzerland, Seeb-Winkel | 1987-09-04 | 1987-10-03 | 1987 | 1 | |
| Kulturhuset Bølgen | Kulturhuset Bølgen | Norway, Larvik | 2009-10-30 | 2020-11-11 | 2009–2023 | 14 | |
| KVS Box | KVS Box | Belgium, Brussels, 9 Quai aux Pierres de Taille | 2005-03-03 | 2005-03-06 | 2005 | 1 | |
| Kratikó Théatro Voreíou Elládos, To | To Kratikó Théatro Voreíou Elládos (National Theatre of Northern Greece) | Greece, Thessaloniki, Ethnikis Amynas str 2 | 2020-02-15 | 2020-05-17 | 2020 | 1 | |
| Keszthely | Keszthely | Hungary, Keszthely | 1925-02-14 | -- | 1925–1926 | 4 | |
| Kirchgemeindehaus Langnau | Kirchgemeindehaus Langnau | Switzerland, Langnau im Emmental, Dorfbergstrasse 2, | 1992-03-12 | 1992-03-21 | 1992 | 1 | |
| Kraljevsko slovensko gledališče Ljubljana | Kraljevsko slovensko gledališče Ljubljana | Slovenia, Ljubljana | 1919-03-08 | -- | 1919 | 1 | |
| Klubhaus i Berlin-Spandau | Klubhaus i Berlin-Spandau | Germany, Berlin, Westerwaldstr. 13 | 2002-09-20 | 2002-10-06 | 2002 | 1 | |
| Kitakyushu | Kitakyushu | Japan, Kitakyushu | 1971-10-05 | -- | 1971 | 1 | |
| Krasnyy Fakel | Krasnyy Fakel (The Novosibirsk State Academic Drama Theatre «Red Torch») | Russia, Novosibirsk Oblast, Ulitsa Lenina, 19 | -- | -- | | | |
| Kiskunfélegyháza | Kiskunfélegyháza | Hungary, Kiskunfélegyháza | 1922-04-03 | -- | 1922–1924 | 2 | |
| Kinimatografos Apollon | Kinimatografos Apollon | Greece, Livadeia | 1981-11-11 | -- | 1981 | 1 | |
| Kemin Kaupunginteatteri | Kemin Kaupunginteatteri | Finland, Kemi, Marina Takalon katu 3 | 1981-11-14 | -- | 1981 | 1 | |
| Kanonhallen | Kanonhallen | Denmark, Copenhagen, Østerfælled Torv 37 | 1994-11-02 | 1994-11-07 | 1994 | 1 | |
| Kolding Teater | Kolding Teater | Denmark, Kolding, Skovbrynet 1 | 1880-03-03 | -- | 1880–2018 | 16 | |
| 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 | |
| K3N Stadthalle Nürtingen | K3N Stadthalle Nürtingen | Germany, Nürtingen, Heiligkreuzstraße 4 | 2009-02-02 | -- | 2009–2015 | 2 | |
| Katariinan kamari | Katariinan kamari | Finland, Kokkola | 2006-01-14 | 2006-05-27 | 2006 | 1 | |
| Kilden | Kilden | Norway, Tønsberg | 1960-03-23 | 1963-03-13 | 1960–1965 | 4 | |
| Komödienhaus | Komödienhaus | Germany, Hamburg | 1920-09-23 | -- | 1920 | 1 | |
| Kino Grenå | Kino Grenå | Denmark, Grenå, Østergade 7 | 2002-10-08 | -- | 2002 | 1 | |
| Košice | Košice | Slovak Republic, Košice | 1889-12-21 | 1928-09-22 | 1889–1940 | 13 | |
| Kotsøy | Kotsøy (Kotsoey) | Norway, Kotsøy | 1971-04-26 | -- | 1971 | 1 | |
| Kleine Bühne | Kleine Bühne | Czech Republic, Prague | 1932-04-27 | -- | 1932 | 1 | |
| Kongsberg Kino | Kongsberg Kino | Norway, Kongsberg, Nymoens Torg 3 | 1968-08-26 | 1993-02-16 | 1968–1993 | 3 | |
| Konzert Theater Coesfeld | Konzert Theater Coesfeld | Germany | 2012-03-07 | 2012-03-07 | 2012 | 1 | |
| KulturBahnhof Aalen | KulturBahnhof Aalen | Germany, Aalen, Georg-Elser-Platz 1, | 2024-03-02 | 2024-04-27 | 2024 | 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 | |
| Kunstbanken Hedmark Kunstsenter | Kunstbanken Hedmark Kunstsenter | Norway, Hamar, Parkgata 21 | 1998-11-15 | -- | 1998 | 1 | |
| Kulturhuset i Toftlund | Kulturhuset i Toftlund | Denmark, Toftlund, Søren Jensens Vej 2 | 2002-03-08 | -- | 2002 | 1 | |
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