Labels: O

Count of albums in parentheses.

• Oasis (2)
• OBE/Steel Wool/ArtClub/Empire (1)
• OBR/Columbia (1)
• Occidental Brothers (1)
• Ocora (1)
• Octone (2)
• Ode (12)
• Odeon (2)
• Odyssey (1)
• Off Course (1)
• Official (1)
• Off the Record (1)
• Oglio/True Believer (1)
• Oh Boy (19)
• Oh Wow Dang (1)
• Oka Productions (1)
• Okeh (1)
• Okeh/Epic (2)
• OKeh/Epic (1)
• Okeh/550 Music (1)
• OKra (4)
• Old Flame/Marshall Teller (1)
• Old Guitar (1)
• Old Hat (3)
• Old Man Saxon (1)
• Old Scratch (1)
• Old 3C (1)
• Olive Juice (1)
• Olivia (1)
• Olympic (1)
• Omad (1)
• Omni (1)
• Omnium (3)
• Omnivore (1)
• OMW (1)
• 1-800-44CHUNK (1)
• 143/Reprise (1)
• 161 (1)
• One Little Indian (5)
• One Little Indian/Epic (1)
• Onion/American (1)
• On the Spot (1)
• On-U Sound (3)
• Opal (3)
• Opal/Warner Bros. (4)
• Open Air (1)
• Open Wide/Columbia (1)
• Open Wide/Monument/Columbia (1)
• OpusLabel/Superlatude (1)
• Opus One (1)
• Orange Mountain (1)
• Orbisonic (1)
• Organized Noize/A&M (1)
• Organized Noize/Interscope (1)
• Org Music (1)
• Original (1)
• Original Jazz Classics (1)
• Original Music (22)
• Original Sin (1)
• Original Sound (2)
• Orindal (1)
• Orleans (1)
• Ostinato (2)
• Otá (1)
• Other Music (1)
• Otrabanda (1)
• Outburst (1)
• Outer Note (1)
• Out Here (9)
• Outpost (5)
• Outpunk (1)
• Out There (6)
• Oval (1)
• Ovation (6)
• Overcore (2)
• Owsla (5)
• Owsla/Big Beat/Atlantic (1)
• Ow Wow Dang (1)