| Koninklijke Nederlandse Schouwburg | Koninklijke Nederlandse Schouwburg | Belgium, Antwerpen | 1918-01-19 | 1992-03-29 | 1918–1992 | 7 | |
| Kongsvinger | Kongsvinger | Norway, Kongsvinger | 1952-03-11 | -- | 1952–2005 | 10 | |
| Kongstenhallen | Kongstenhallen | Norway, Fredrikstad, Torsnesveien 12 | 1997-10-20 | 1997-10-21 | 1997 | 1 | |
| Kongshaug musikkgymnas | Kongshaug musikkgymnas | Norway, Lepsøy, Os | 2006-03-25 | 2006-03-28 | 2006 | 1 | |
| Kongsberg, Kinoen | Kinoen Kongsberg | Norway, Kongsberg, Nymoens Torg 3 | 1969-08-27 | -- | 1969–1984 | 8 | |
| Kongsberg Musikkteater | Kongsberg Musikkteater | Norway, Kongsberg, Hasbergs vei 36 | 2019-09-17 | 2019-10-11 | 2019 | 1 | |
| Kongsberg Kino | Kongsberg Kino | Norway, Kongsberg, Nymoens Torg 3 | 1968-08-26 | 1993-02-16 | 1968–1993 | 3 | |
| Kongsberg | Kongsberg | Norway, Kongsberg | 1966-09-07 | 1996-03-15 | 1966–1999 | 7 | |
| Kongreßhaus Villach | Kongreßhaus Villach | Austria, Villach, Europaplatz 1 | 2001-04-02 | -- | 2001 | 1 | |
| Kongresshaus | Kongresshaus | Switzerland, Davos | 1980-03-13 | 1980-03-14 | 1980 | 1 | |
| Kongress-Saal AVALON Hotelpark Königshof | Kongress-Saal AVALON Hotelpark Königshof | Germany, Königslutter, Braunschweiger Str. 21A | 2007-02-18 | -- | 2007 | 1 | |
| Kongliga Stora Teatern | Kongliga Stora Teatern | Sweden, Stockholm, Gustav Adolfs torg 2 | 1876-11-11 | 1886-03-29 | 1876–1888 | 7 | |
| Kongliga Operan | Kongliga Operan | Sweden, Stockholm | 1892-03-15 | 1893-04-08 | 1892–1893 | 2 | |
| Kongliga Dramatiska Teatern | Kongliga Dramatiska Teatern | Sweden, Stockholm, Kungsträdgården | 1857-11-04 | 1905-04-19 | 1857–1903 | 40 | 1 |
| Kongerød ungdomsskole | Kongerød ungdomsskole | Norway, Skien, Skien | 2006-09-27 | -- | 2006 | 1 | |
| Kongelige Teater, Det | Det Kongelige Teater | Denmark, Copenhagen, August Bournonvilles Passage 8 | 1870-02-16 | 2016-06-19 | 1870–2016 | 101 | |
| Konferenscenter Safiren (Cosmos) | Konferenscenter Safiren (Cosmos) | Sweden, Katrineholm, Drottninggatan 19 | 2010-10-04 | -- | 2010 | 1 | |
| Koncertpalæets store Sal | Koncertpalæets store Sal | Denmark, Copenhagen | 1894-12-11 | -- | 1894 | 1 | |
| Konak Sahnesi | İzmir Devlet Tiyatrosu Konak Sahnesi ( Izmir State Theatre Konak Stage) (Konak Stage) | Turkey, Izmir, Mithatpaşa Caddesi No: 110 Konak | -- | -- | | | |
| Komödienhaus | Komödienhaus | Germany, Hamburg | 1920-09-23 | -- | 1920 | 1 | |
| Komödie, Die | Die Komödie | Germany, Berlin, Kurfürstendamm 209 | 1933-02-23 | -- | 1933–1938 | 3 | |
| Komödie Basel | Komödie Basel | Switzerland, Basel | 1950-11-06 | 2001-04-10 | 1950–2000 | 14 | |
| Komödie | Komödie | Austria, Vienna, Franz-Josefs-Kai 29 | 1947-11-25 | -- | 1947–1950 | 3 | |
| Komorní scéna Aréna | Komorní scéna Aréna | Czech Republic, Moravská Ostrava, 28. října 2 | 2014-03-22 | 2018-06-21 | 2014–2016 | 2 | |
| Kommunestyresalen, Rådhuset | Kommunestyresalen, Rådhuset | Norway, Grimstad, Arendalsveien 23 | 2009-10-28 | -- | 2009 | 1 | |
| Kommunehuset | Kommunehuset | Norway, Nannestad | 1969-02-14 | -- | 1969–1978 | 5 | |
| Kommunales Kontakttheater | Kommunales kontakttheater (KKT) | Germany, Stuttgart, Kissinger Straße 66A | 1996-06-07 | -- | 1996 | 1 | |
| Komm. kinoen | Komm. kinoen | Norway, Steinkjer | 1952-03-07 | -- | 1952 | 1 | |
| Komm. kino | Komm. kino | Norway, Oppdal | 1952-02-24 | -- | 1952–1971 | 5 | |
| Komm. kino | Komm. kino | Norway, Mysen | 1959-01-14 | 1959-01-15 | 1959 | 1 | |
| Komische Oper Berlin | Komische Oper Berlin | Germany, Berlin, Behrenstraße 55 | 2016-04-07 | 2016-04-08 | 2016 | 1 | |
| Komediteatern | Komediteatern | Sweden, Stockholm | 1936-11-11 | -- | 1936 | 1 | |
| Komediehuset | Komediehuset | Norway, Bergen, Engen 39 | 1853-01-02 | 1928-10-05 | 1853–1928 | 92 | |
| Komárom | Komárom | Hungary, Komárom | 1925-03-25 | -- | 1925–1935 | 2 | |
| Komárno | Komárno | Slovak Republic, Komárno | 1926-11-19 | -- | 1926–1938 | 2 | |
| Komaba Agora Theater | ΑΓΟPA (Komaba Agora Theater) (Komaba Agora Theater) | Japan, Meguro-ku, Komaba 1-11-13, Yubinbango | -- | -- | | | |
| Koma Sahnesi | Koma Sahnesi (Koma Stage) | Turkey, Istanbul, Hasanpaşa Mah. Derici Zeynel Sokak No: 15/A KADIKÖY | 2020-01-24 | -- | 2020 | 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 | |
| Kom Hoorn | Kom Hoorn | Netherlands, Terschelling | 2003-06-13 | 2003-08-14 | 2003 | 1 | |
| Kolvereid Samfunnshus | Kolvereid Samfunnshus | Norway, Kolvereid | 1961-02-11 | -- | 1961–1989 | 3 | |
| Kolvereid | Kolvereid | Norway, Kolvereid | 1995-02-22 | -- | 1995–2005 | 2 | |
| Kolpingsaal | Kolpingsaal | Germany, Neunkirchen/Saar | 1980-03-17 | -- | 1980 | 1 | |
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