| Klein, Georg | Georg Klein | Composer | 2004 - 2008 | 6 | 1 |
| Karatolou, Maro | Maro Karatolou | Composer | 2004 | 1 | |
| Kalaš, Julius | Julius Kalaš | Composer | 1941 | 1 | |
| Kelly, Jane | Jane Kelly | Composer | 2015 - 2017 | 38 | |
| Kallerdahl, Fabian | Fabian Kallerdahl | Composer | 2005 | 1 | |
| Kaczyński, Adam | Adam Kaczyński | Composer | 1978 | 1 | |
| Kaszycki, Lucjan | Lucjan Kaszycki | Composer | 1963 | 1 | |
| Kohel, Moinuddin | Moinuddin Kohel | Composer | 2006 | 1 | |
| Khalid, Kamol | Kamol Khalid | Composer | 2006 | 2 | |
| Kjærbye, Kuno | Kuno Kjærbye | Composer | 2006 | 2 | |
| Khalef, Ahmed | Ahmed Khalef | Composer | 2006 | 5 | |
| Kollaros, Nikos | Nikos Kollaros | Composer | 2006 | 1 | |
| Kampen, Claire, Van | Claire Van Kampen | Composer | 2008 | 1 | |
| Kairies, Henrik | Henrik Kairies | Composer | 2008 | 1 | |
| Khan, Ahsan, Reza | Ahsan Reza Khan | Composer | 2015 | 2 | |
| König, Ulrich | Ulrich König | Composer | 2009 - 2010 | 3 | |
| Kröger, Olav | Olav Kröger | Composer | 2009 | 1 | |
| Kuhn, Timo | Timo Kuhn | Composer | 2010 - 2012 | 5 | |
| Kamalam, K. | K. Kamalam | Composer | 2015 | 1 | |
| Kraehahn, Arno | Arno Kraehahn | Composer | 2009 - 2016 | 5 | |
| Kaizar, Peter | Peter Kaizar | Composer | 1998 - 2010 | 2 | |
| Kalniņš, Imants | Imants Kalniņš | Composer | 1964 | 1 | |
| Kolczynski, Tomek | Tomek Kolczynski | Composer | 2013 | 1 | |
| Kemp, Malcom | Malcom Kemp | Composer | 2014 | 1 | |
| Karkoff, Maurice | Maurice Karkoff | Composer | 1963 | 1 | |
| Kerkmann, Fred | Fred Kerkmann | Composer | 2012 | 1 | |
| K, Leyla | Leyla K | Composer | 2011 | 1 | |
| Kavallari, Maria | Maria Kavallari | Composer | 2014 | 1 | |
| Kainer, Robert | Robert Kainer | Composer | 2013 | 1 | |
| Kawamoto, Satoru | Satoru Kawamoto | Composer | 1998 | 1 | |
| Kniep, Jason | Jason Kniep | Composer | 2000 | 1 | |
| Klemm, Thomas | Thomas Klemm | Composer | 2000 | 1 | |
| Kröger, Kaisa | Kaisa Kröger | Composer | 2000 | 1 | |
| Kalniņš, Jānis | Jānis Kalniņš | Composer | 1935 | 1 | |
| Kazasoglou, Giorgos | Giorgos Kazasoglou | Composer | 1945 | 1 | |
| Kauppi, Emil | Emil Kauppi | Composer | 1925 | 1 | |
| Keiding, Anders | Anders Keiding | Composer | 1976 | 1 | |
| Kálmán, Emmerich | Emmerich Kálmán | Composer | 2018 | 1 | |
| Kamimura, Shuhei | Shuhei Kamimura | Composer | 2018 | 2 | |
| Karetnikov, Nikolaj | Nikolaj Karetnikov | Composer | 1979 - 1981 | 2 | |
| Kilmer, Logan | Logan Kilmer | Composer | 2006 | 1 | |
| Knauer, Karl | Karl Knauer | Composer | 1933 | 1 | |
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