- The Just Brothers -- The Justin Cofield Band
- The Justin Merritt Band -- The JW-Jones Blues Band
- The Jynx -- The K-Pers
- The K Sisters -- The Kaananites
- The Kablamos -- The Kagools
- The Kahalas -- The Kaisers
- The Kaldirons -- The Kallikak Family
- The Kálmán Oláh Trio -- The Kamikazes
- The Kami's -- The Kandinsky Effect
- The Kandy Apples -- The Kanenhi:Io Singers
- The Kangol Kid -- The Kansas City Boulevard Big Band
- The Kansas City Sound -- The Karg Boys
- The Karl Hendricks Trio -- The Karnataka College Of Percussion
- The Karpinka Brothers -- The Karvasales
- The Karwin Patrix Band -- The Katalyst 5 Project
- The Kate Becker Project -- The Katies
- The Katinas -- The Kaz Jazz Quartet
- The KBC -- The Keawe Trio
- The Kebab Brothers -- The Keepers
- The Keggs -- The Keith John Adams
- The Keith Mansfield Orchestra -- The Kelley Deal 6000
- The Kells -- The Kelly Gang