| Köln | Köln | Germany, Köln | -- | -- | | | |
| Kenosha | Kenosha | United States, Kenosha | -- | -- | | | |
| Komaba Agora Theater | ΑΓΟPA (Komaba Agora Theater) (Komaba Agora Theater) | Japan, Meguro-ku, Komaba 1-11-13, Yubinbango | -- | -- | | | |
| Kent | Kent | England, Kent | -- | -- | | | |
| Koppang | Koppang | Norway, Koppang | -- | -- | | | |
| Kaliningrad | Kaliningrad | Russia, Kaliningrad | -- | -- | | | |
| Krajské oblastní divadlo Olomouc | Krajské oblastní divadlo Olomouc | Czech Republic, Olomouc | -- | -- | | | |
| Koszalin | Koszalin | Poland, Koszalin | -- | -- | | | |
| Kuressaare | Kuressaare | Estonia, Kuressaare | -- | -- | | | |
| Klagenfurt | Klagenfurt | Austria, Klagenfurt | -- | -- | | | |
| Kaiserliches Deutsches Hoftheater | Kaiserliches Deutsches Hoftheater St. Petersburg | Russia, Saint Petersburg | -- | -- | | | |
| Kulttuuritehdas Korjaamo | Kulttuuritehdas Korjaamo | Finland, Helsinki | -- | -- | | | |
| Konak Sahnesi | İzmir Devlet Tiyatrosu Konak Sahnesi ( Izmir State Theatre Konak Stage) (Konak Stage) | Turkey, Izmir, Mithatpaşa Caddesi No: 110 Konak | -- | -- | | | |
| Königsberg | Königsberg | Germany, Königsberg | -- | -- | | | |
| Kneževo | Kneževo | Bosnia and Herzegovina | -- | -- | | | |
| Korgen | Korgen | Norway, Korgen | -- | -- | | | |
| Kärnten | Kärnten | Austria | -- | -- | | | |
| Kotka | Kotka | Finland, Kotka | -- | -- | | | |
| Kulturni centar Zrenjanina | Kulturni centar Zrenjanina (Zrenjanin Cultural Center) | Serbia, Zrenjanin, Narodne omladine 1 | -- | -- | | | |
| Karlsruhe | Karlsruhe | Germany, Karlsruhe | -- | -- | | | |
| Kalundborg | Kalundborg | Denmark, Kalundborg | -- | -- | | | |
| Karcag | Karcag | Hungary, Karcag | -- | -- | | | |
| Kokkola | Kokkola | Finland, Kokkola | -- | -- | | | |
| Kammerbühne | Kammerbühne | Germany, Schwerin | -- | -- | | | |
| Kardam (Arman) | Кардам (Kardam) | Bulgaria, Kardam | -- | -- | | | |
| Kellertheater Hamburg | Kellertheater Hamburg | Germany, Hamburg, Johannes-Brahms-Platz 1 | -- | -- | | | |
| Krøderen | Krøderen (Kroederen) | Norway, Krøderen | -- | -- | | | |
| Kellertheater Thun | Kellertheater Thun | Switzerland, Thun | 1985-10-26 | 1985-11-09 | 1985 | 1 | |
| Kurtheater, Norderney | Kurtheater, Norderney | Germany, Norderney | 2010-03-09 | -- | 2010 | 1 | |
| Kirkens Bymisjon | Kirkens Bymisjon | Norway, Fredrikstad, O. P. Pettersens gate 4 | 2009-06-15 | -- | 2009 | 1 | |
| Kom Hoorn | Kom Hoorn | Netherlands, Terschelling | 2003-06-13 | 2003-08-14 | 2003 | 1 | |
| Kommunales Kontakttheater | Kommunales kontakttheater (KKT) | Germany, Stuttgart, Kissinger Straße 66A | 1996-06-07 | -- | 1996 | 1 | |
| Kurhaus | Kurhaus | Germany, Bad Rappenau, Fritz-Hagner-Promenade 2 | 2006-02-14 | -- | 2006 | 1 | |
| Krajské oblastní divadlo | Krajské oblastní divadlo | Czech Republic, Karlovy Vary | 1956-01-21 | -- | 1956 | 1 | |
| Königliches Theater Helgoland (Hoftheater-Ensemble) | Königliches Theater Helgoland (Hoftheater-Ensemble) | Germany, Helgoland | 1878-04-14 | -- | 1878 | 1 | |
| Kant-Gymnasium | Kant-Gymnasium | Germany, Pirmasens | 1984-12-07 | -- | 1984 | 1 | |
| Kitasato Auditorium | Kitasato Auditorium | Japan, Tokyo | 1958-10-14 | -- | 1958 | 1 | |
| Kulturhuset i Ytterjärna | Kulturhuset i Ytterjärna | Sweden, Järna, Kulturcentrum Järna | 2011-05-31 | -- | 2011 | 1 | |
| Kultur Raum im Rosenhof | Kultur Raum im Rosenhof | Germany, Kleines Wiesental, Schwand 8 | 2006-06-27 | -- | 2006 | 1 | |
| Kinoen | Kinoen | Norway, Moss | 1952-02-14 | -- | 1952 | 1 | |
| Krochttheater | Krochttheater | Netherlands, Rotterdam | 1987-11-08 | -- | 1987 | 1 | |
| Katholisches Pfarreizentrum Heilig Geist | Katholisches Pfarreizentrum Heilig Geist | Switzerland, Wetzikon, Langfurrenstrasse 10 | 2010-05-16 | -- | 2010 | 1 | |
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