Nyktophobia

Melodic Death Metal

4 Albums

Nyx

Black Metal

1 Album

O.68

Funeral Doom Metal

1 Album

Obey The Kraken

Deathcore

3 Albums

Obscenity

Death Metal

10 Albums

Obscura

Technical Death Metal

8 Albums

Obscure Infinity

Death Metal

7 Albums

Obscurity

Viking Metal

10 Albums

Obsidian Gate

Black Metal

4 Albums

Obsidious

Progressive Metal

2 Albums

OBSUN

Stoner Metal

1 Album

Occvlta

Doom Metal

2 Albums

Oceans

Metalcore

9 Albums

Odal

Black Metal

12 Albums

Ødelegger

Black Metal

6 Albums

Odem Arcarum

Black Metal

4 Albums

Odium Immortalis

Black Metal

1 Album

Odroerir

Folk Metal

5 Albums

OHL

Thrash Metal

18 Albums

Old

Thrash Metal

3 Albums

Old Growth

Atmospheric Black Metal

1 Album

Old Pagan

Black Metal

7 Albums

Ølgod

Stoner Metal

1 Album

Olymp

Heavy Metal

3 Albums