O
- The O'Jays (Columbia/Philadelphia International)
- The O'Kanes (Columbia Nashville)
- The Offspring
- Babatunde Olatunji
- Ollabelle
- Joe "King" Oliver
- One Direction (Syco Music/Columbia)
- Onyx (JMJ/RAL/Chaos/Columbia)
- Oomph! (Columbia Deutschland)
- Original Concept (Def Jam/Columbia)
- Eugene Ormandy (Columbia Masterworks)
- Our Lady Peace
Read more about this topic: Columbia Records Artists