| Kulturzentrum Frankental | Kulturzentrum Frankental | Germany, Stolberg, Frankentalstraße 3 | 2002-12-04 | 2011-04-14 | 2002–2011 | 4 | |
| Kleines Theater am Markt | Kleines Theater am Markt | Germany, Wahlstedt, Waldstraße 16 | 2005-09-30 | -- | 2005 | 1 | |
| Kolding Teater | Kolding Teater | Denmark, Kolding, Skovbrynet 1 | 1880-03-03 | -- | 1880–2018 | 15 | |
| Kellertheater Thun | Kellertheater Thun | Switzerland, Thun | 1985-10-26 | 1985-11-09 | 1985 | 1 | |
| Kulturring Grosshansdorf | Kulturring Grosshansdorf | Germany, Grosshansdorf, Ihlendieksweg 23A | 2015-10-10 | 2015-10-10 | 2015 | 1 | |
| Kirkens Bymisjon | Kirkens Bymisjon | Norway, Fredrikstad, O. P. Pettersens gate 4 | 2009-06-15 | -- | 2009 | 1 | |
| Kvam Bygdahus | Kvam Bygdahus | Norway | 1963-02-27 | 1963-02-28 | 1963 | 1 | |
| Kommunales Kontakttheater | Kommunales kontakttheater (KKT) | Germany, Stuttgart, Kissinger Straße 66A | 1996-06-07 | -- | 1996 | 1 | |
| Krochttheater | Krochttheater | Netherlands, Rotterdam | 1987-11-08 | -- | 1987 | 1 | |
| Kalmar Teater | Kalmar Teater | Sweden, Kalmar, Larmtorget | 1879-05-19 | 1880-05-28 | 1879–1898 | 7 | |
| Kanonhallen | Kanonhallen | Norway, Oslo, Peter Møllers vei 2 | 2012-02-23 | 2012-02-26 | 2012 | 1 | |
| Kvitsund Gymnas | Kvitsund Gymnas | Norway, Kviteseid, Jacob Naadlands Veg 2 | 2012-11-30 | 2012-12-01 | 2012 | 1 | |
| Kolozsvári Állami Magyar Színház | Kolozsvári Állami Magyar Színház | Romania, Cluj-Napoca | 1922-12-15 | 2019-06-07 | 1922–2020 | 18 | |
| Krúdy Kamaraszínház | Krúdy Kamaraszínház | Hungary, Nyíregyháza, Bessenyei tér 13 | 1995-12-15 | -- | 1995–2007 | 2 | |
| Kolvereid | Kolvereid | Norway, Kolvereid | 1995-02-22 | -- | 1995–2005 | 2 | |
| Koblenz | Koblenz | Germany, Koblenz | 1923-09-01 | -- | 1923 | 1 | |
| Kelsey Theatre | Kelsey Theatre | United States, Princeton Junction, 1200 Old Trenton Rd | 2013-10-24 | 2013-10-24 | 2013 | 1 | |
| Kieler Stadttheater | Kieler Stadttheater | Germany, Kiel | 1878-10-14 | 1880-03-08 | 1878–1934 | 5 | |
| Kaye Playhouse Hunter College | The Kaye Playhouse Hunter College | United States, New York, 695 Park Ave | 1997-10-24 | 1997-10-25 | 1997 | 1 | |
| Komaba Agora Theater | ΑΓΟPA (Komaba Agora Theater) (Komaba Agora Theater) | Japan, Meguro-ku, Komaba 1-11-13, Yubinbango | -- | -- | | | |
| Kurtheater | Kurtheater | Germany, Bad Kissingen, Theaterplatz | 1997-10-26 | 1997-10-26 | 1997–2018 | 5 | |
| Keble O’Reilly Theatre | Keble O’Reilly Theatre | England | 2010-11-17 | 2010-11-20 | 2010 | 1 | |
| Kulturhuset Milepelen | Kulturhuset Milepelen | Norway, Sagstua, Herredsveien 2 | 1989-09-17 | 2015-09-30 | 1989–2015 | 3 | |
| Kulturhuset i Toftlund | Kulturhuset i Toftlund | Denmark, Toftlund, Søren Jensens Vej 2 | 2002-03-08 | -- | 2002 | 1 | |
| Kent State University Theatre | Kent State University Theatre | United States, Kent, B141 Music and Speech Building | 1968-04-06 | -- | 1968 | 1 | |
| Kenosha | Kenosha | United States, Kenosha | -- | -- | | | |
| Konzert und Festhalle | Konzert und Festhalle | Germany, Wörth/Rhein | 1980-03-19 | -- | 1980 | 1 | |
| Kinolokalet | Kinolokalet | Norway, Vikersund | 1927-09-15 | -- | 1927 | 1 | |
| Künstlerhaus Mousonturm | Künstlerhaus Mousonturm | Germany, Frankfurt am Main, Waldschmidtstraße 4 | 2000-12-16 | 2015-01-29 | 2000–2015 | 2 | |
| Kinoen | Kinoen | Norway, Eidsvoll | 1963-01-13 | 1963-01-14 | 1963–1969 | 2 | |
| Krajské oblastní divadlo | Krajské oblastní divadlo | Czech Republic, Karlovy Vary | 1956-01-21 | -- | 1956 | 1 | |
| Korskirken | Korskirken | Norway, Bergen, Vågsbunnen | 2008-02-13 | 2008-02-14 | 2008 | 1 | |
| Kinder Space | Kinder Space | Japan, Tokyo, 5-13-39 Shirokanedai, Minato Ku | 2009-02-25 | 2009-03-01 | 2009 | 1 | |
| Kungshamn | Kungshamn | Sweden, Kungshamn | 1989-10-30 | 1989-10-30 | 1989 | 1 | |
| Kongreßhaus Villach | Kongreßhaus Villach | Austria, Villach, Europaplatz 1 | 2001-04-02 | -- | 2001 | 1 | |
| Königliches Theater Helgoland (Hoftheater-Ensemble) | Königliches Theater Helgoland (Hoftheater-Ensemble) | Germany, Helgoland | 1878-04-14 | -- | 1878 | 1 | |
| Katoto Secondary School | Katoto Secondary School | Malawi, Katoto | 2006-06-04 | -- | 2006 | 1 | |
| Kaisersaal, Gr. Freiheit | Kaisersaal, Gr. Freiheit | Germany, Hamburg-Altona | 1894-05-27 | -- | 1894–1895 | 3 | |
| Kagoshima City Central Public Hall | Kagoshima City Central Public Hall | Japan, Kagoshima | 1986-05-23 | -- | 1986 | 1 | |
| Kent | Kent | England, Kent | -- | -- | | | |
| Komödie | Komödie | Austria, Vienna, Franz-Josefs-Kai 29 | 1947-11-25 | -- | 1947–1950 | 3 | |
| Krefeld | Krefeld | Germany, Krefeld | 2002-02-17 | -- | 2002 | 1 | |
|
|
