• ‡ Iahsari (Melodic/Folk-metal)
• ‡ Icarian (Heavy/Folk-metal)
• Idaslet (Folk/Viking metal)
• ‡ Ifing (Black/Folk-metal)
• Ignis fatuu (Folk-metal)
• Ikael (Folk-rock)
• ‡ Illdåd (Folk-metal)
• ‡ Illuminandi (Christian Folk-metal)
• ‡ Impius Mundi (Medieval Rock)
• Incantatem (Folk-metal)
• Incursed (Epic Viking Metal)
• In Extremo (Folk/Medieval Rock)
• In Ora Mundi (Folk/Medieval Rock)
• Infinitas (Folk Heavy Metal)
• Ingrimm (Folk/Medieval Metal)
• ‡ Inis Gwenva (Black/Folk-metal)
• Irish Moutarde (Celtic Punk/Rock)
• Irminsul (Pagan/Viking/Folk Metal)
• ‡ Irrbloss (Black Viking/Folk-metal)
• Isakoatl (Folk/Heavy metal)
• Isatha (Folk-metal)
• ‡ Isengard (Folk Black Metal)
• Isenmor (Folk-metal)
• ‡ Ithilien (Melodic Folk-metal)
• Ivan Tzarevich (Epic/Folk Metal)
• Izmoroz (Pagan/Folk/Black Metal)