• 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)