Orthodox - Sentencia
ss, 2009, Alone records SPA (white vinyl)
Orthodox - Sentencia
ss, 2009, Alone records SPA (black vinyl)
Orphaned Land - The Forbidden Tracks
n, 2019, Night of the Vinyl Dead ITA
Origin of Infinity - The Last Day on Earth
n, 2020, Origin of Infinity
Organismos - Manejos Invisibles
n, 2011, Me Saco un Ojo Records UK
Ordo Inferus - Invictus et Aeternus
n, 2014, Doomentia CZ
Orden Ogan - Final Days
ss, 2020, AFM D - clear vinyl
Orcrist - Fallen
n, 2011, Aphelion UK
Opus Forgotten - Demon of Destruction
m, 2000, Aftermath Music, NOR
Opprobrium (Incubus) - Serpent Temptation
ss, 1988, High Roller D (2023)
Onslaught - The Force
ss, 1986, High Roller D (2019)
Oniricous - Ritos Diabolicos
n, 2013, Equinox SPA (2015)
Omen - Into the Arena
n, 2012, No Remorse GRE
Omen - Battle Cry
ss, 1984, High Roller D (2022)
Omega Infinity - Solar Spectre
n, 2020, Seasons of Mist FRA
Olde - The Gates of Dawn
n, 2013, Soulseller NL
Old Mans Child - Slaves of the World
n, 2009, Floga GRE (2018)
October Tide - In Splender Below
n, 2019, Agonia PL
Obtest - Auka Seniems Dievams
n, 2001, Leda Takas LIT (2011)
Obtest - Amžina Aušra
n, 2011, Ledo Takas LIT
Obsidian Kingdom - A Year with no Summer
n, 2016, Season of Mist FRA
Obituary - Dead
ss, 1998, Listenable FRA (2018)
Oak - Oak
n, 2009, A389 Recordings USA
Oak - ii
n, 2010, A389 Recordings USA
Nupta Cadavera - Nupta Cadavera
n, 2019, Nuclear War Now USA
Nunslaughter - Metal Assault on Melbeurne & Brisbane
n, 2009, Hells Headbangers USA (3 x 7")
Not Fragile / Z-Iron - Masters of Metal
ss, 2004, Hellion DŠedý vinyl
Not Fragile / Z-Iron - Masters of Metal
ss, 2004, Hellion D, Růžový vinyl
Northtale - Eternal Flame
n, 2022, Night of the Vinyl Dead ITA
Non Opus Dei - Glod
n, 2019, Pagan Records PL