- Sabhankra (Power/Folk/Deathmetal)
- Sacra Arcana (Folk-metal) ‡
- Sakramant (Folk-metal)
- Salduie (Folk-metal)
- Saltatio Mortis (Mittelalter Rock)
- The Samans (Folk/Industrial Metal) ‡
- Sand Aura (Mid. Eastern Folk Metal) ‡
- Saor (Atmospheric Celtic Black Metal)
- Saralisse (Folk/trash-metal)
- Särimner (Folk-metal) ‡
- SatanaKozel (Viking/Folk Metal)
- Saurom (Folk-metal)
- Schandmaul (Folk Rock/Metal)
- Scars of Sense (Folk-metal)
- Schattentanz (Folk/Gothic Metal) ‡
- Schelmish (Alternative/Folk Rock) ‡
- Schwarzwald (Black/Folk-metal) ‡
- Scythia (Folk-metal) ‡
- Sechem (Oriental/Folk-metal)
- Sekengard (Folk-metal)
- Selvans (Folk/Black Metal)
- Serdce Kamen (Pagan Folk-metal) ‡
- Serpentyne (Medieval/Folk-metal)
- Severnye Vrata (Folk-metal) ‡
- Shambless (Folk/Black Metal)
- ShamRocks (Celtic/Folk-punk)
- Shangren (Folk/Death/Black Metal) ‡
- Shexna (Doom/Folk Metal)
- Shieldwall (Folk-metal) ‡
- Shtack (Pirate Metal) ‡
- Sieta (Folk-metal)
- Sig:Ar:Tyr (Dark/Acoustic/Folk-Metal)
- Sigelpa (Celtic Punk) ‡
- Silent Stream of Godless Elegy (Doom/Folk-metal)
- Siluria (Dark Metal) ‡
- Simargl (Pagan Folk Metal) ‡
- Siren’s Rain (Folk-metal)
- Sirocco (Celtic Trash Metal) ‡
- Sir Reg (Celtic Rock/Punk)
- Sjuk (Pagan Folk-metal) ‡
- Skald (Folk-metal) ‡
- Skaldborg (Folk-metal)
- Skálmöld (Viking/Folk-metal)
- Skarn (Celtic Rock)
- Skiltron (Power/Folk-metal)
- Skjaldborg (Viking/Pagan metal)
- Skontra (Folkpunk)
- Skull Branded Pirates (Power/Folk-metal)
- Skyclad (Folk-metal)
- Skyforger (Pagan/Folk Black Metal)
- Slane (Folk-metal) ‡
- Sleeping Woodland (Folk-metal)
- Smokey Bastard (Folk-punk) ‡
- Smuta (Pagan Folk-metal)
- Sny Bendžamina (Folk-metal) ‡
- Sói Đen (Folk-metal) ‡
- Sojourner (Epic Atmospheric Metal)
- Solarcycles (Folk-Rock/Metal)
- Solvald (Folk infl. Black Metal)
- Sovitus (Pagan/Folk-metal) ‡
- Spellblast (Power Folk-metal)
- Spiegelkeller (Folk/Gothic Metal) ‡
- Spire (Medieval Folk-metal)
- Star Bringer (Orchestral/Folk-metal) ‡
- Steignyr (Celtic Folk-metal)
- Stilema (Folk-metal)
- Stille Volk (Medieval Folk / Celtic)
- Stojar (Pagan Folk Metal)
- Storm (Viking Folk-metal) ‡
- Storm Seeker (Pirate Folk-metal)
- Stormtide (Symph. Folk/Death Metal)
- Stozhar ( Pagan Folk Metal)
- StriboG (Black/Folk-metal)
- Stworz (Slavic Pagan Metal)
- Subway to Sally (Folk/Medieval Metal)
- SuidAkrA (Melodic/Folk/Medieval Metal)
- Suld (Folk-metal)
- Summoning (Epic/Black Metal)
- The Sunday Punchers (Folk Punk) ‡
- Sunuthar (Folk-metal) ‡
- Surturs Lohe (Pagan metal)
- Svarga (Pagan Folk-metal)
- Svartby (Folk-metal)
- Svartsot (Folk-metal)
- Svaskalver (Folk-metal)
- Sventoyar (Folk/Death-metal)
- Sverdkamp (Folk-infl. Black/Viking metal) ‡
- Svidgar (Viking Folk-metal) ‡
- Sworn to the Sword (Folk-metal)
- Sylvatica (Folk/Death Metal)
- Symon Muzyka (Folk-metal)