| Komaba Agora Theater | ΑΓΟPA (Komaba Agora Theater) (Komaba Agora Theater) | Japan, Meguro-ku, Komaba 1-11-13, Yubinbango | -- | -- | | | |
| Karlsruhe | Karlsruhe | Germany, Karlsruhe | -- | -- | | | |
| Kalundborg | Kalundborg | Denmark, Kalundborg | -- | -- | | | |
| Karcag | Karcag | Hungary, Karcag | -- | -- | | | |
| Kokkola | Kokkola | Finland, Kokkola | -- | -- | | | |
| Kinderspace | Kinderspace | Japan, Tokyo | -- | -- | | | |
| Kammerbühne | Kammerbühne | Germany, Schwerin | -- | -- | | | |
| 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 | -- | -- | | | |
| Krøderen | Krøderen (Kroederen) | Norway, Krøderen | -- | -- | | | |
| Kneževo | Kneževo | Bosnia and Herzegovina | -- | -- | | | |
| Köln | Köln | Germany, Köln | -- | -- | | | |
| Kenosha | Kenosha | United States of America, Kenosha | -- | -- | | | |
| Kent | Kent | England, Kent | -- | -- | | | |
| Koppang | Koppang | Norway, Koppang | -- | -- | | | |
| Kaliningrad | Kaliningrad | Russia, Kaliningrad | -- | -- | | | |
| Koriyama | Koriyama | Japan, Koriyama | -- | -- | | | |
| Koszalin | Koszalin | Poland, Koszalin | -- | -- | | | |
| Klagenfurt | Klagenfurt | Austria, Klagenfurt | -- | -- | | | |
| Kuressaare | Kuressaare | Estonia, Kuressaare | -- | -- | | | |
| Kaiserliches Deutsches Hoftheater | Kaiserliches Deutsches Hoftheater St. Petersburg | Russia, Saint Petersburg | -- | -- | | | |
| Kulturni centar Zrenjanina | Kulturni centar Zrenjanina (Zrenjanin Cultural Center) | Serbia, Zrenjanin, Narodne omladine 1 | -- | -- | | | |
| Krasnyy Fakel | Krasnyy Fakel (The Novosibirsk State Academic Drama Theatre «Red Torch») | Russia, Novosibirsk Oblast, Ulitsa Lenina, 19 | -- | -- | | | |
| Königsberg | Königsberg | Germany, Königsberg | -- | -- | | | |
| Korgen | Korgen | Norway, Korgen | -- | -- | | | |
| Kardam (Arman) | Кардам (Kardam) | Bulgaria, Kardam | -- | -- | | | |
| Kärnten | Kärnten | Austria | -- | -- | | | |
| Kyoto | Kyoto | Japan, Kyoto | -- | -- | | | |
| Kotka | Kotka | Finland, Kotka | -- | -- | | | |
| Karaganda Regional Academic Kazakh Drama Theater | Karaganda, in the S. Seifullin Karaganda Regional Academic Kazakh Drama Theater | Kazakhstan, Karaganda | 2023-12-20 | 2023-12-20 | 2023 | 1 | |
| Kammerspiele Seeb | Kammerspiele Seeb | Switzerland, Seeb-Winkel | 1987-09-04 | 1987-10-03 | 1987 | 1 | |
| Khios | Khios | Greece, Khios | 1904-07-28 | -- | 1904 | 1 | |
| Kurtheater Bad Kreuznach | Kurtheater Bad Kreuznach | Germany, Bad Kreuznach | 1895-08-26 | -- | 1895 | 1 | |
| Kant-Gymnasium | Kant-Gymnasium | Germany, Pirmasens | 1984-12-07 | -- | 1984 | 1 | |
| Kitasato Auditorium | Kitasato Auditorium | Japan, Tokyo | 1958-10-14 | -- | 1958 | 1 | |
| Kurtheater, Norderney | Kurtheater, Norderney | Germany, Norderney | 2010-03-09 | -- | 2010 | 1 | |
| Kunstencentrum De Vlasbloem | Kunstencentrum De Vlasbloem | Belgium, Nieuwkerken-Waas, Gyselstraat 9 | 2007-03-10 | 2007-03-31 | 2007 | 1 | |
| Krajské divadlo Kolín | Krajské divadlo Kolín | Czech Republic, Kolín | 1976-04-30 | -- | 1976 | 1 | |
| Kinoen | Kinoen | Norway, Moss | 1952-02-14 | -- | 1952 | 1 | |
| Kellertheater Hamburg | Kellertheater Hamburg | Germany, Hamburg, Johannes-Brahms-Platz 1 | 2018-10-19 | -- | 2018 | 1 | |
| Katholisches Pfarreizentrum Heilig Geist | Katholisches Pfarreizentrum Heilig Geist | Switzerland, Wetzikon, Langfurrenstrasse 10 | 2010-05-16 | -- | 2010 | 1 | |
| Krokom | Krokom | Sweden, Krokom | 1989-09-27 | 1989-09-27 | 1989 | 1 | |
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