Bands

Heiden

Czechia · Black Metal (early); Post-Black Metal/Rock (mid); Post-Rock (later)

Heidnir

Austria · Black Metal

Heliothan

Australia · Progressive Death Metal

Hell's Artillery

Colombia · Speed Metal

HellZeimer

France · Thrash/Death Metal

Herbscure

Austria · Experimental Black Metal/Reggae

Higurd

Germany · Black Metal

Hoarfrost Sky

Spain · Depressive/Atmospheric Black Metal

Hoopsnake

Canada · Sludge/Doom Metal

Horizon Ablaze

Norway · Black/Death Metal

Hot Cherry

Italy · Stoner Metal/Rock

Human Hate

Portugal · Death Metal

Humator

Italy · Death Metal

Hunter Kraken

Peru · Death Metal/Deathcore

Hyems

Germany · Melodic Black Metal

I Am Lethe

Italy · Gothic Metal

IATT

United States · Metalcore (early); Progressive/Melodic Black/Death Metal (later)

Icosandria

Portugal · Post-Metal

Ides of Winter

Canada · Black Metal

If It Bleeds

New Zealand · Thrash / Crust / Punk / Hardcore / Metalcore / Nu Metal

Igni Dare

Venezuela · Black Metal

Ignominious

United States · Death/Groove Metal

Immoralis

United States · Symphonic Melodic Death Metal/Metalcore

Impartial Dismemberment

United States · Deathcore