| Kongliga Dramatiska Teatern (Gamla Dramaten) | Kongliga Dramatiska Teatern (Gamla Dramaten) | Sweden, Stockholm, Kungsträdgården | 1857-11-04 | 1905-04-19 | 1857–1903 | 40 | 1 |
| Komediehuset | Komediehuset | Norway, Bergen, Engen 39 | 1853-01-02 | 1928-10-05 | 1853–1928 | 92 | 1 |
| Kleines Haus at Staatstheater Mainz | Kleines Haus at Staatstheater Mainz | Germany, Mainz, Tritonplatz | 1998-10-17 | 2001-06-28 | 1998–2001 | 2 | |
| Komödie | Komödie | Austria, Vienna, Franz-Josefs-Kai 29 | 1947-11-25 | -- | 1947–1950 | 3 | |
| Kärntner Grenzlandtheater Klagenfurt | Kärntner Grenzlandtheater Klagenfurt | Austria, Klagenfurt | 1942-01-09 | -- | 1942 | 1 | |
| Kjølnes ungdomsskole | Kjølnes ungdomsskole | Norway, Porsgrunn, Porsgrunn | 2005-11-01 | 2006-11-14 | 2005–2006 | 2 | |
| Kolpinghaus | Kolpinghaus | Germany, Paderborn | 1980-02-28 | -- | 1980 | 1 | |
| Kornerhalle Schwechat | Kornerhalle Schwechat | Austria, Schwechat, Rathausplatz 6 | 2004-02-20 | -- | 2004 | 1 | |
| Krochttheater | Krochttheater | Netherlands, Rotterdam | 1987-11-08 | -- | 1987 | 1 | |
| Koninklijke Schouwburg | Koninklijke Schouwburg | Netherlands, The Hague, Korte Voorhout 3 | 1929-05-19 | 2013-02-26 | 1929–2017 | 26 | |
| Katrineholm | Katrineholm | Sweden, Katrineholm | 1936-10-24 | 2019-09-18 | 1936–2019 | 3 | |
| Kikinda | Kikinda | Serbia, Kikinda | 1906-10-28 | -- | 1906 | 1 | |
| Kammerspiele Rendsburg | Kammerspiele Rendsburg | Germany, Rendsburg, Hans-Heinrich-Beisenkötter-Platz 1 | 2011-05-10 | -- | 2011 | 1 | |
| Kinolokalet | Kinolokalet | Norway, Askim | 1952-02-18 | -- | 1952–1956 | 2 | |
| Kolozsvári Állami Magyar Színház | Kolozsvári Állami Magyar Színház | Romania, Cluj-Napoca | 1922-12-15 | 2019-06-07 | 1922–2020 | 18 | |
| Kurtheater | Kurtheater | Germany, Bad Kissingen, Theaterplatz | 1997-10-26 | 1997-10-26 | 1997–2018 | 5 | |
| Kellertheater Hamburg | Kellertheater Hamburg | Germany, Hamburg, Johannes-Brahms-Platz 1 | 2018-10-19 | -- | 2018 | 1 | |
| Kolkata | Kolkata | India, West Bengal | 1950-11-26 | 2019-07- | 1950–2019 | 3 | |
| KXT on Broadway | KXT on Broadway | Australia, Sydney, 181 Broadway, Ultimo NSW | 2024-10-18 | 2024-11-02 | 2024 | 1 | |
| Kvartersteatern | Kvartersteatern | Sweden, Norrköping, Tunnbindaregatan 37 | 2020-03-06 | -- | 2020 | 1 | |
| K. K. Hof-Burgtheater | K. K. Hof-Burgtheater | Austria, Vienna, Michaelerplatz | 1876-10-26 | 1876-12-29 | 1876 | 1 | |
| Kulturhalle Remchingen | Kulturhalle Remchingen | Germany, Remchingen, Hauptstraße 115 | 1997-09-21 | 2000-01-26 | 1997 | 1 | |
| Kom Hoorn | Kom Hoorn | Netherlands, Terschelling | 2003-06-13 | 2003-08-14 | 2003 | 1 | |
| Knickerbocker Theatre | Knickerbocker Theatre | United States of America, New York, 1396 Broadway (West 38th Street) | 1905-03-07 | 1905-03- | 1905 | 1 | |
| Kinderspace | Kinderspace | Japan, Tokyo | -- | -- | | | |
| Kirkebygden Skole | Kirkebygden Skole | Norway, Enebakk, Enebakk | 2005-11-02 | -- | 2005 | 1 | |
| Klosterøya, PM7 | Klosterøya, PM7 | Norway, Skien, Union bruk | 2009-06-03 | 2015-03-14 | 2009–2015 | 6 | |
| Kammerspiele in der Böttcherstraße | Kammerspiele in der Böttcherstraße | Germany, Bremen, Böttcherstraße | 1982-01-20 | -- | 1982 | 1 | |
| Kurhaus | Kurhaus | Germany, Bad Rappenau, Fritz-Hagner-Promenade 2 | 2006-02-14 | -- | 2006 | 1 | |
| Kenosha | Kenosha | United States of America, Kenosha | -- | -- | | | |
| Kruisboog Cultural Center | Kruisboog Cultural Center | Belgium, Tienen, Minderbroedersstraat 15 | 1998-11-19 | -- | 1998–2007 | 2 | |
| Königliches Schloßtheater Ansbach | Königliches Schloßtheater Ansbach | Germany, Ansbach | 1894-01-05 | -- | 1894 | 1 | |
| Kungälv | Kungälv | Sweden, Kungälv | 1960-10-16 | -- | 1960 | 1 | |
| Kinoen | Kinoen | Norway, Eidsvoll | 1963-01-13 | 1963-01-14 | 1963–1969 | 2 | |
| Königliches Theater Helgoland (Hoftheater-Ensemble) | Königliches Theater Helgoland (Hoftheater-Ensemble) | Germany, Helgoland | 1878-04-14 | -- | 1878 | 1 | |
| Kent | Kent | England, Kent | -- | -- | | | |
| Kopervik | Kopervik | Norway, Kopervik | 1971-03-05 | -- | 1971–2004 | 4 | |
| Kärnten | Kärnten | Austria | -- | -- | | | |
| Kragerø kirke | Kragerø kirke | Norway, Kragerø | 2016-11-03 | -- | 2016 | 1 | |
| Kaisersaal, Gr. Freiheit | Kaisersaal, Gr. Freiheit | Germany, Hamburg-Altona | 1894-05-27 | -- | 1894–1895 | 3 | |
| Kulturhuset Spira | Kulturhuset Spira | Sweden, Jönköping, Kulturgatan 3 | 2020-02-07 | 2020-03-15 | 2020 | 1 | |
| Kleines Theater Bad Godesberg | Kleines Theater Bad Godesberg | Germany, Bad Godesberg, Bonn, Koblenzer Straße 78 | 1967-10-31 | 2007-04-06 | 1967–2007 | 3 | |
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