- KK
- KK
- KKAA
- KaaKad
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- KaiKal
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- KalKAM
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- KweKyg
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- KymkZm
- Klepht
- Kleppevik, Johannes
- Klergy
- Klerks, The
- Kleszcz
- Kleu
- Kleurenblind, Nancy & De Zingende Roadie
- Kleveland, Åse
- Kley, Vitor
- Kley, Vitor & Martini, Bruno
- Klez.e
- Klezmatics, The
- Klezmer Conservatory Band
- Klezmer Nova
- Klezmerson
- Klezmonauts, The
- KLF, The (British electronic band with several aliases)
- KLF, The feat. Wynette, Tammy
- KLF, The featuring Children of the Revolution
- KLF, The featuring The Children of the Revolution
- Klich, Kasia
- Kliché (Danish Band)
- Kliemann, Fynn
- Kliff (Finnish band)
- Klijbroek, Tom
- Klijn, René
- Klima (Angèle David-Guillou; French singer)
- Klima,Vera
- Klimax
- Klimek
- Klimek, Johnny (Australian score composer)
- Klimek, Johnny & Heil, Reinhold
- Klimeks
- Klimenko, Viktor
- Klimt 1918
- Klincz
- Kline, James (Classical 11-string guitar-lute player)
- Kline, Kevin (actor)
- Kline, Léah
- Kline, Stan
- Kling, Karl (producer/songwriter/DJ)
- Kling, Marc-Uwe
- Klingande (Cédric Steinmyller, French DJ)
- Klingande feat. Broken Back
- Klingande feat. Daylight
- Klingenström, Clara
- Klingonz
- Klinik (Belgian industrial music band)
- Klinika Denisa Kataneca
- Klink, Steve
- Klinkhammer, Haley
- KLINT (German Synth Punk)
- Klintwood, West
- Kliodna
- Klippert, Billy
- Klips ve Onlar (ESC 1986 for Turkey)
- Klipwerf Orkes
- Klique
- Klischée (Swiss swing)
- Kllo (Australian duo)
- KLM (Norwegian Comedy Trio)
- KLM Music
- KLM Music ft. Star, Coco
- Kloe
- KLOE (Scottish Pop Artist)
- KLON (Groupe français)
- Klondike Kat (One of the rap pioneers in H-Town)
- Klone (French rock/metal band)
- Klonhertz
- Klopfenstein, Scott
- Klopfgeister (German progressive psytrance project)
- Klopjag
- Kloq
- Klose, Tom
- Kloser, Harald
- Kloser, Luka
- Kloss, Eric (US jazz saxophonist)
- Kloss, Marco
- Kloss, Sherry
- Kloß, Stefanie
- Klossmajor
- Kloster
- Klostertaler
- Klostertaler
- KLOUD (2010s electronic artist)
- Kloud (Kloud Solo)
- Kloud 9
- KLOUD feat. Gabriel Paris
- Klovner i Kamp
- KLP (EDM)