Bedrift O - Hell
- Ohv50a AS
- Ole Dybwad
- Odd Moen
- Ola Korstad
- Overvik Invest AS
- Oleksii Kolesnykov
- Ola Dybvad
- Ole Svenn Leren
- Odd Gunnar Sorte
- Ole Christian Melhus
- Olegs Ivanovs Levering
- Ole Sigurd Kvål
- Ole Tomas Thyholt
- Ole Vig-Fondet
- Oranje Emiliaan Trøan
- Ole Jonny Bjørgum
- Oskar S Bud AS
- Orica Norway Avd Hell
- Orica Norway AS Avd Hell