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
Orden Ogan - Final Days
ss, 2020, AFM D - clear vinyl
Ordo Inferus - Invictus et Aeternus
n, 2014, Doomentia CZ
Organismos - Manejos Invisibles
n, 2011, Me Saco un Ojo Records UK
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)
Outrage - 1985 Demo(n)s
n, 1985, Ripping Storm, ITA (2014)
Outrage - The Book of the Seven Seals
n, 1987, Ripping Storm ITA (2023)
Overkill / Kreator - split 7"
n, 2017, Nuclear Blast
Pagan - Gehasst
m/m, 1997, Zorn D
Pagan Rites - Embrace the Torments of Hell
m/ex, 2010, Atolinga MEX
Paganfire - Hate Vanishing Point
n, 2008, Iron Bonehead D
Paganfire - Invoke False Metal´s Death
n, 2010, Monster Nation CZ
Paganfire - Wreaking Fear and Death
ss, 2013, Anger of Metal D