| Kungälv | Kungälv | Sweden, Kungälv | 1960-10-16 | -- | 1960 | 1 | |
| Kristiansund, Festiviteten | Festiviteten Kristiansund (Festiviteten) | Norway, Kristiansund, Kong Olav V's gate 1 | 1952-02-25 | 2014-04-11 | 1952–2014 | 15 | |
| Karthika Thirunal Theatre | Karthika Thirunal Theatre | India, Thiruvananthapuram, East fort | 2011-06-03 | -- | 2011 | 1 | |
| Kvelde skole | Kvelde skole | Norway, Larvik, Larvik | 2007-01-12 | -- | 2007 | 1 | |
| Kautokeino | Kautokeino | Norway, Kautokeino | 1990-10-05 | -- | 1990–2001 | 2 | |
| Kunsthalle | Kunsthalle | Germany, Singen, Ekkehardstr. 23 | 1997-10-18 | 1997-10-19 | 1997 | 1 | |
| K. K. Hof-Burgtheater | K. K. Hof-Burgtheater | Austria, Vienna, Michaelerplatz | 1876-10-26 | 1876-12-29 | 1876 | 1 | |
| Königliches Schauspielhaus | Königliches Schauspielhaus | Germany, Berlin, Gendarmenmarkt | 1889-03-04 | 1914-02-19 | 1889–1940 | 17 | |
| Kazan | Kazan | Russia, Republic of Tatarstan | 1908-10-01 | -- | 1908 | 1 | |
| Kinoen | Kinoen Farsund | Norway, Farsund | 1956-05-03 | -- | 1956–1987 | 7 | |
| Kherson | Kherson | Ukraine, Kherson | 1902-11-29 | 1904-01-27 | 1902–1904 | 6 | |
| Konak Sahnesi | İzmir Devlet Tiyatrosu Konak Sahnesi ( Izmir State Theatre Konak Stage) (Konak Stage) | Turkey, Izmir, Mithatpaşa Caddesi No: 110 Konak | -- | -- | | | |
| Kurhausbühne | Kurhausbühne | Germany, Baden Baden | 1919-01-11 | -- | 1919–1925 | 10 | |
| Krajské oblastní divadlo Hradec Králové | Krajské oblastní divadlo Hradec Králové | Czech Republic, Hradec Králové | 1960-04-09 | -- | 1960 | 1 | |
| Kramfors | Kramfors | Sweden, Kramfors | 1991-04-08 | 1991-04-08 | 1991 | 1 | |
| Krasnodarski molodežnjij teatr | Krasnodarski molodežnjij teatr (Krasnodar Youth Theater) | Russia, Krasnodar, Krasnodar Krai, Ulitsa Mitrofana Sedina, 28 | 2016-10-06 | -- | 2016 | 1 | |
| Kennington Theatre | Kennington Theatre | England, London, Kennington Park Road | 1917-06-12 | -- | 1917 | 1 | |
| Kutno | Kutno | Poland, Kutno | 1918-04- | -- | 1918 | 1 | |
| Körmend | Körmend | Hungary, Körmend | 1909-12-22 | 1922-12-29 | 1909–1922 | 3 | |
| Kneževo | Kneževo | Bosnia and Herzegovina | -- | -- | | | |
| Kulturhuset | Kulturhuset | Norway, Molde, Kirkekråpet | 1986-04-07 | 2007-04-13 | 1986–2007 | 3 | |
| Kulturbygget | Kulturbygget | Norway, Fagernes | 1981-11-06 | -- | 1981 | 1 | |
| Kearney Opera House | Kearney Opera House | United States of America, Kearney | 1905-05-15 | 1905-05-15 | 1905 | 1 | |
| Klubben | Klubben | Norway, Tønsberg | 1968-08-29 | 1969-10-12 | 1968–1969 | 3 | |
| Kragerø kirke | Kragerø kirke | Norway, Kragerø | 2016-11-03 | -- | 2016 | 1 | |
| Kristiansand Katedralskole | Kristiansand Katedralskole | Norway, Kristiansand, Jegersbergveien 1 | 2006-03-20 | -- | 2006 | 1 | |
| Kongsberg | Kongsberg | Norway, Kongsberg | 1966-09-07 | 1996-03-15 | 1966–1999 | 7 | |
| K. k. und National-Theater Innsbruck | K. k. und National-Theater Innsbruck | Austria, Innsbruck | 1881-01-07 | 1881-01-12 | 1881 | 1 | |
| Kirk O'Field Church Hall | Kirk O'Field Church Hall | Scotland, Edinburgh, 140 Pleasance | 2000-08-14 | 2000-08-26 | 2000 | 1 | |
| Kecskemét | Kecskemét | Hungary, Kecskemét | 1909-03-06 | -- | 1909–2007 | 14 | |
| Kulturhaus Chur | Kulturhaus Chur | Switzerland, Chur, Bienenstrasse 7 | 2002-04-26 | 2002-04-27 | 2002 | 1 | |
| Kalita Humphreys Theater | Kalita Humphreys Theater | United States of America, Dallas, 3636 Turtle Creek Blvd | 2001-09-05 | 2018-07-07 | 2001–2018 | 2 | |
| Kulturhaus Knittelfeld | Kulturhaus Knittelfeld | Austria, Knittelfeld, Gaaler Straße 4 | 1993-10-13 | -- | 1993 | 1 | |
| Kulturni centar Travno | Kulturni centar Travno (Cultural Center Travno) | Croatia, Zagreb, Božidara Magovca 17 | 2021-03-01 | -- | 2021 | 1 | |
| Kolpingsaal | Kolpingsaal | Germany, Neunkirchen/Saar | 1980-03-17 | -- | 1980 | 1 | |
| Krøderen | Krøderen (Kroederen) | Norway, Krøderen | -- | -- | | | |
| Kinokuniya sazanshiatā | Kinokuniya sazanshiatā (Kinokuniya Southern Theatre) | Japan, Tokyo, 7F Takashimaya Times Square, 5-24-2, Sendagaya, Shibuya-ku | 1997-09-18 | 2002-02-11 | 1997–2002 | 3 | |
| Kungliga Dramatiska Teatern | Kungliga Dramatiska Teatern | Sweden, Stockholm, Nybroplan | 1908-03-07 | 2012-04-28 | 1908–2011 | 46 | |
| Konzert- und Theatersaal, Nordhorn | Konzert- und Theatersaal, Nordhorn | Germany, Nordhorn, Ootmarsumer Weg 14 | 2010-03-12 | -- | 2010–2018 | 2 | |
| Kirkenes Videregående skole | Kirkenes Videregående skole | Norway, Kirkenes, Sor-Varanger | 1997-10-22 | -- | 1997–2015 | 2 | |
| Kinoen | Kinoen | Norway, Harstad | 1959-02-26 | 1959-02-27 | 1959 | 1 | |
| Kolding Teater | Kolding Teater | Denmark, Kolding, Skovbrynet 1 | 1880-03-03 | -- | 1880–2018 | 16 | |
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