Bedrift O - Hommersåk
- Okra AS
- Oseland Pt
- O&M Haga AS
- Oaland Invest AS
- Oddny Bilstad
- Ole Usken
- Olavs Marineservice AS
- Okka Eiendom AS
- Oddgeir Skjørestad
- Ole Henrik Kalviknes
- Olawole Oladele O
- Odny Helen Lerum
- O. Berge Holding AS
- Olav Takstmann Skjørestad
- Once Twice Bent Johansen
- Orku Dagny Krogedal Høie Enk
- Olsson Apex Advisory Group AS
- Osaland Entertainment V/Joakim Vassbø Osaland
- Offshore Assistanse V/Grant Rune Kleiberg