ORYX

Sludge Metal

7 Albums

Osculum Serpentis

Black Metal

7 Albums

OSI

Progressive Metal

5 Albums

Osi and the Jupiter

Folk Metal

11 Albums

Oskoreien

Melodic Black Metal

4 Albums

Ossea Cyphus

Black Metal

2 Albums

Ossification

Brutal Death Metal

2 Albums

Ossomancer

Black Metal

2 Albums

Ossuarium

Death Metal

2 Albums

Ossuary

Death Metal

1 Album

Ossuary

Death Metal

2 Albums

Ossuary Insane

Death Metal

1 Album

Otep

Nu Metal

11 Albums

Others

Metal

7 Albums

Others by No One

Progressive Metal

2 Albums

Other World

Atmospheric Black Metal

3 Albums

otis archer

Progressive Metal

4 Albums

Oubliette

Melodic Black Metal

3 Albums

Ounce of Self

Heavy Metal

1 Album

Our Last Night

Metal

17 Albums

Our Mother’s Martyr

Groove Metal

1 Album

Our Place of Worship Is Silence

Black Metal

3 Albums

Outcome

Metal

1 Album

Outer Graves

Death Metal

1 Album