Labels: O

Count of albums in parentheses.

• Oasis (2)
• OBR/Columbia (1)
• Occidental Brothers (1)
• Octone (1)
• Ode (12)
• Odeon (2)
• Odyssey (1)
• Off Course (1)
• Official (1)
• Oglio/True Believer (1)
• Oh Boy (13)
• Okeh/Epic (2)
• OKeh/Epic (1)
• Okeh/550 Music (1)
• OKra (4)
• Old Hat (3)
• Old Scratch (1)
• Old 3C (1)
• Olive Juice (2)
• Olivia (1)
• Omni (1)
• Omnium (3)
• OMW (1)
• 1-800-44CHUNK (1)
• 143/Reprise (1)
• One Little Indian (4)
• One Little Indian/Epic (1)
• Onion/American (1)
• On the Spot (1)
• On-U Sound (2)
• Opal (3)
• Opal/Warner Bros. (4)
• Open Air (1)
• Open Wide/Columbia (1)
• Open Wide/Monument/Columbia (1)
• Opus One (1)
• Orbisonic (1)
• Organized Noize/A&M (1)
• Organized Noize/Interscope (1)
• Original (1)
• Original Music (22)
• Original Sin (1)
• Original Sound (2)
• Otrabanda (1)
• Outburst (1)
• Out Here (2)
• Outpost (5)
• Outpunk (1)
• Out There (1)
• Oval (1)
• Ovation (6)
• Overcore (2)