- Baldrs Draumar (Folk/Viking Metal)
- Balkandji (Heavy / Folk-metal)
- Balt Hüttar (Folk-metal)
- ‡ Balyios (Melodic Folk-metal)
- Barad Guldur (Folk-metal)
- Baradj (Post folk-rock/ post folk-metal)
- Barbarian Warriors in search of Wisdom (Pagan Folk Metal)
- Barbar’O’Rhum (Folk-Rock)
- Barbar Punk (Folk-punk)
- Barloventos (Folk/Power Metal)
- ‡ Bastion (Pagan / Folk-Metal)
- ‡ Battleheart (Folk Power Metal)
- Battlelore (Symphonic Epic Metal)
- ‡ Battlesoul (Folk/Celtic trashmetal)
- Battle Tales (Folk-metal)
- Baumbart (Folk-metal)
- Beast Impalor (Death/Folk-metal)
- ‡ Beer Bear (Folk-metal)
- ‡ Belegost (Folk-metal)
- Belenos (Black Metal)
- Bellfast (Folk-metal)
- ‡ Bergatagen (Trollish Black Metal)
- Bergsvriden (Black / Folk-metal)
- Biersbreaker (Folk-metal)
- ‡ Bifröst (Epic Pagan Metal)
- Black Corsair (Folk / Power Metal)
- Black Kirin (Black/Folk-metal)
- ‡ Black Leaves (Folk/Gothic Metal)
- ‡ Black Lotus (Black/Folk Metal)
- Black Magic Fools (Mittelalter Folkrock)
- Black Messiah (Black/Folk Metal)
- ‡ The Black Tartan Clan (Celtic Punk)
- ‡ Black Velvet Band (Folk-metal)
- ‡ Blackwolf (Folk-metal)
- Blodiga Skàld (Folk-metal)
- ‡ Blood or Whiskey (Folk-punk)
- Bloodshed Walhalla (Epic Viking Metal)
- ‡ The Bloody Irish Boys (Folk Punk)
- Bloodywood (Folk infused metal)
- Bodh’aktan (Celtic Punk)
- Boisson Divine (Folk-metal)
- ‡ Bolero (Pagan/Folk/Black Metal)
- ‡ Boombaard (Folk-metal)
- ‡ Bor (Epic Pagan Folk-metal)
- ‡ Borean Dusk (Prog Metal/Folk)
- Borknagar (Black/Prog/Viking/Folk Metal)
- ‡ Bostonskoe Chaepitie (Folk-punk)
- Boyanov Gimn (Folk-metal)
- Brachmond (Medieval Rock/Metal)
- ‡ Bran Barr (Celtic Folk/Black Metal)
- ‡ Bretheren (Folk/Black/Death metal)
- ‡ Brethren (Folk/Black/Power metal)
- ‡ Brezno (Folk-metal)
- Bring to Bear (Melodeath Folk-metal)
- Briselas (Folk-metal)
- ‡ Brotherhood (Folk-rock / Folk-metal)
- Brutus’ Daughters (Punk/Folk)
- Brymir (Pagan/Folk Metal)
- ‡ Buaiteoir (Folk-metal)
- Bucium (Folk-rock/fok-metal)
- Bucovina (Folk-metal)
- Bunch Of Bastards (Celtic Punk)
- Burden of Ymir (Folk influenced metal)
- Butterfly Temple (Pagan/Doom Metal)