Hardcore

Hundredth

Melodic Hardcore · Hardcore

Hyena

Hardcore · Black metal

I Spy

Punk · Hardcore

I.Witness

Hardcore · Screamo

Identity

Punk · Hardcore

Idiot Savant

DubStep · Electronic

Igneon System

Hardcore · Breakcore

Ignite

Melodic Hardcore · Punk Rock

In Hearts Wake

Post Hardcore · Metal

INU

New Wave · Punk

Ira Glass

Punk · Hardcore

Iridium

Hardcore · Metalcore

Iron Reagan

Hardcore · Thrash metal

Ironside

Hardcore · Heavy metal

It Prevails

Post Hardcore · Melodic Hardcore

Jawbone

Blues · Hardcore

Jaws

Punk · Hardcore

Jenna

Pop · Female vocalists

JFA

Punk Rock · Punk

Joey Riot

Electronic · Hardcore

John Coffey

Rock · Melodic Hardcore

John Tyrrell

Hardcore · Drum n bass

Jonestown

Rock · Punk

Joshua

Hard Rock · Hardcore

Judas

Rock · Hardcore

Judge

Hardcore · Hardcore Punk

Junkhead

Hardcore · Metalcore

Kartel

Hip Hop · Hardcore

Karybdis

Hardcore · Death metal

Ken Mode

Hardcore · Sludge

Kerouac

Hardcore · British

Kevin Energy

Hardcore

Keyside Strike

Punk · Hardcore

Kezia

Post Hardcore · Hardcore

Kickback

Metal · Hardcore

Killswitch Engage

Rock · Metal