Death-Black-Doom
October Tide - In Splender Below
n, 2019, Agonia PL
Old Mans Child - Slaves of the World
n, 2009, Floga GRE (2018)
Olde - The Gates of Dawn
n, 2013, Soulseller NL
Omega Infinity - Solar Spectre
n, 2020, Seasons of Mist FRA
Oppressor - The Demos
n, 1993, Hammerheart NL (2024) blue vinyl
Opprobrium (Incubus) - Serpent Temptation
ss, 1988, High Roller D (2023)
Orcrist - Fallen
n, 2011, Aphelion UK
Ordo Inferus - Invictus et Aeternus
n, 2014, Doomentia CZ
Organismos - Manejos Invisibles
n, 2011, Me Saco un Ojo Records UK
Origin - Chaosmos
n, 2022, Agonia PL (red vinyl)
Origin of Infinity - The Last Day on Earth
n, 2020, Origin of Infinity
Orphaned Land - The Forbidden Tracks
n, 2019, Night of the Vinyl Dead ITA
Orthodox - Sentencia
ss, 2009, Alone records SPA (black vinyl)
Orthodox - Sentencia
ss, 2009, Alone records SPA (white vinyl)
Pagan - Gehasst
m/m, 1997, Zorn D
Pagan Rites - Embrace the Torments of Hell
m/ex, 2010, Atolinga MEX
Paganfire - Invoke False Metal´s Death
n, 2010, Monster Nation CZ
Paganfire - Wreaking Fear and Death
ss, 2013, Anger of Metal D