Obtest - Amžina Aušra
n, 2011, Ledo Takas LIT
Obtest - Auka Seniems Dievams
n, 2001, Leda Takas LIT (2011)
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
Omen - Into the Arena
n, 2012, No Remorse GRE
Omen - Teeth of the Hydra
n, 1989, Black Beard ITA (2021)
Oniricous - Ritos Diabolicos
n, 2013, Equinox SPA (2015)
Onslaught - The Force
ss, 1986, High Roller D (2019)
Oppressor - The Demos
n, 1993, Hammerheart NL (2024) blue vinyl
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)
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
Pan.Thy.Monium - Dawn of Dreams
n, 1992, Dark Symphonies USA (2014) - black vinyl
Pan.Thy.Monium - Khaooohs
n, 1993, Dark Symphonies USA (2014) - black vinyl
Pandemia - Pandemia
n, 1997, Paranoia Syndrome SUI
Pandemia - Personal Demon
n, 2003, Nasphyr CZ (2022)