- K.A.N.T.N.A.G.A.N.O.
- Kai, Jin
- Kalichstein-Laredo-Robinson Trio
- Kalthoum, Oum
- Kamjoo, Saeed
- Kamloops Symphony Orchestra
- Kämper, Rudolf
- Kang, Eyvind
- Kappeler, Beat
- Kataoka, Ayano
- Kaze, Leila Donabelle
- Kearney, Patrick
- Keep the Dog
- Kehler, Nolan
- Keller, Géraldine
- Kelley, Russell
- Kennedy, Kathy
- Kentros, George
- Kern, Margit
- Keung, Hoi Tong
- Kidsnap
- Kiik, Tiina
- Kim, Yubin
- Kindred Spirits
- Kindred Spirits Sextet
- Kinner, Adam
- Klangforum Wien
- Klause, Carolyn
- Klaxon Gueule
- Klein, Julieanne
- Kleine, Lorenzo
- Klimbo
- KNM Berlin
- Knörh, Ysengourd
- Koh, Min-Jeong
- Kölner Ensemble für Neues Musiktheater
- Kondo, Fusako
- Kontarsky, Alfons
- Kontarsky, Aloys
- Kosman, Adele
- Koyohide, Yoshizumi
- Kradjian, Serouj
- Krasnyanskaya, Irina
- Krehm, Rachel
- Krucker, Fides
- Kulish, Taras
- Kunz, Jean-Willy
- Kuo, Lynn
- Kuroki, Maya
- Kurtág, György