#, A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z

O		35
	Obscenity: Demo-Niac (1999)
	Obscura: Cosmogenesis (209)
	Occult (Hol): Of Flesh And Blood (1999)
	Occult (Hol): Elegy For The Weak (2004)
	Occult (Hol): Prepare To Meet Thy Doom (1994)	N/A
	Oceano: Depths (Limited Edition) (2009)
	Octavia Sperati: Winter Enclosure (2005)	N/A
	Octinomos: On The Demiurge (1995) (Rare artwork needs to be replaced)	N/A
	Old Man's Child: Vermin (2005)
	Old Man's Child: Slaves Of The World (2009)
	Opeth: Deliverance (2002)	N/A
	Opeth: Ghost Reveries (2005)	N/A
	Opeth: Mellotron Heart (2008)	N/A
	Opeth: Watershed (2008)	N/A
	Organic Infest: The Way To Temptation (2003)	N/A
	Orgy: Candyass (1998)
	Orgy: Punk Statik Paranoia (2004)
	Orgy: Vapor Transmission (2000)
	Origin (US): A Coming Into Existence (Demo) (1998) (Autographed)	N/A
	Origin (US): Antithesis (2008)
	Origin (US): Echoes Of Decimation (2005)
	Origin (US): Informis Infinitas Inhumanitas (2002)
	Orphanage: Driven (2004)	N/A
	Orphanage: Inside (2000)	N/A
	Orphaned Land: Mabool - The Story Of Three Sons Of Seven (Limited Bonus Disc Edition) (2004)
	OSI: Office Of Strategic Influence (2003)	N/A
	Overkill (US): Bloodletting (2000)	N/A
	Overkill (US): From The Underground And Below (1997)	N/A
	Overkill (US): Horrorscope (1991)	N/A
	Overkill (US): I Hear Black (1993)
	Overkill (US): Immortalis (2007)
	Overkill (US): Ironbound (2010)
	Overkill (US): Killbox 13 (2003)
	Overkill (US): ReliXIV (2005)
	Overlord's Perpetual: Overlord's Perpetual (2005) (Promotional version)	N/A
	Ozzy Osbourne: Down To Earth (2001)