Bedrift O - Stokke
- Oxytech AS
- Oppmuntring AS
- Opsal Torbjørn
- Osmundsen Holding AS
- Olsrød Transport AS
- Okso Eiendom AS
- Ole Halle
- Ormestad Invest AS
- Olivia mote
- Olaf Dahl
- Onsrud Taksering AS
- Oseberg Engineering AS
- Osp Invest AS
- Olg Norway AS
- Olafsen Engros AS
- Onsrud Eiendom AS
- Osmundsen Geir
- Owe Runo Hansen
- Ole M Sørhaug
- Osteopat Andreas Ryde
- Olsrød Per A
- Ole Kristian Lund
- Odd Magne Kjær
- Odd Kr. Hagen
- Odd Terje Kvål
- Olafsen Engros AS (NorEngros)
- Ole Bekken Holding AS
- Olsen - Celcius Ken Andre
- Opus One Big Band
- Oppegård Inger-Marie Andersen
- Ole R.J.Holding AS
- Odd Jarle Stener Olsen
- Olminor-Service Olga M. Nordnes
- Oryx Safari Norway Endre Teigen
- Ole Arnt Stavnum og Hustru Hulda Louises Legat
- Ole Arnt Stavnum og Hustru Hulda Louises Legat