Bedrift O - Vormsund
- Oaj AS
- Owe Grauphaugen
- Ola Østerud
- Ove Lure AS
- Ole Einar Bakke
- Ole Magnus Jacobsen
- Ole Pål Nordbye
- Ole Kristian Thesen
- Ove Einar Bjerkemoen
- Okmedia Ole Kaldal
- Ole Morten Thoresen
- Oldboyz Gaming Community
- Oppegaard Christian August
- Ole Martin Runden
- Ole Albert Bøhn
- Ole Einar Bakke
- Ove Johan Lure
- Old Tractor Booking&Management Bergroth
- Ole Andreas Raffelsen Johnsen