Bands by letter: K
- Kaamos
- Kadenzza
- Kaipa
- Kalibas
- Kalisia
- Kalmah
- Kamelot
- Kampfar
- Kania
- Kantor Voy
- Kaos Rising
- Kari Rueslåtten
- Karkadan
- Karl Sanders
- Karnage
- Karnak
- Karyan
- Katagory V
- Kataklysm
- Katatonia
- Bob Katsionis
- Kayo Dot
- Kayser
- Keel
- Keelhaul
- Keep of Kalessin
- Kekal
- Ken Baumgartner
- Kenos
- Ken Rubenstein
- Kenziner
- Kerry Conley
- Kevin Moore
- Khali
- Khanate
- Kharma Cosmic
- Khold
- Kiko Loureiro
- The Kill
- Killengod
- Killer Dwarfs
- Killers
- Kill For Satan
- Killing Joke
- Killing Time
- Killswitch Engage
- Kill The Client
- Kilswitch
- Kimaera
- K.I.N.
- Kinetic Dissent
- King Diamond
- Kingdom Come
- Kingdom of Sorrow
- King's-Evil
- King's X
- Michael Kiske
- Kiss It Goodbye
- Kittie
- Kiuas
- kLaNK
- Knever
- K-Octave
- Koldborn
- Koldbrann
- The Kolios Project
- Kong
- Konkhra
- Kopecky
- Korn
- Korova
- Korovakill
- Korpiklaani
- Korum
- Korzus
- Kotipelto
- The Kovenant
- Koyaanisqatsy
- Krabathor
- Kragens
- Krakatau
- Kralizec
- Krallice
- Kreator
- Krepuskul
- Krieg
- Krisiun
- Kristallnacht
- Krohm
- Krokus
- Kromlek
- Kronk
- Krueger
- Kruiz
- Krux
- Kryptos
- Kublai Khan
- Kult
- Kult Ov Azazel
- Kultus Infernum
- Vitalij Kuprij
- Kvaathan
- Kvikksølvguttene
- Kvist
- KYPCK
- Kyuss