• Kaarnekorpi (Viking/Folk-metal)
• Kaatarakt (Folk/Viking Metal)
• Ka Gaia An (Folk-metal) ‡
• Kagan (Pagan/Folk-metal) ‡
• Kalevala (Folk-rock/Folk-Metal)
• Kalevala H.M.S. (Folk-rock, speedfolk)
  Kalaveraztekah (Folk influenced Progressive Death Metal)
• Kalmah (Melodic Death Metal)
• Kampfar (Pagan Black Metal)
• Kanseil (Folk-metal)
• Kara Han (Folk-metal)
• Kazkariv (Folk-metal)
• Kêltikah (Folk-metal) ‡
• KerecsenSólyom (Symph. Folk-metal) ‡
• Kernunna (Celtic Folk-metal)
• Khepra (Folk-metal)
• Kivimetsän Druidi (Symph. Folk-metal) ‡
• Khren (Folk-metal)
• Knaat (Melodic Pagan Metal)
• Kolo Pravi (Pagan Folk-metal) ‡
• Kormak Folk-metal
• Korpiklaani (Folk-metal)
• Korrigans (Folk Black Metal) ‡
• Kosmogonia (Folk-metal)
• Kot Bayn (Folk-metal)
• Krampus (Folk/Death Metal) ‡
• Krayenzeit (Medieval Rock)
• KromleK (Viking/Folk/Black Metal) ‡
• Krovavyi Rif (Folk/Pirate-Metal/Punk)
• KrukGard (Folk-metal) ‡
• Krynitza (Folk/Folk-metal)
• Kryvoda (Folk/Death Metal) ‡
• Kultasiipi (Folk-metal/Rock)
• Kvasura (Folk-metal)
• Kylfingar (Folk/Viking Metal)