Bedrift O - Aker brygge
- Onzonz AS
- Opifex AS
- Onlineevent AS
- Oviv AS
- Oljefondet AS
- Octillion AS
- Olga AS
- Ore & Co AS
- Omø
- OnNet AS
- Oasis
- Oelde AS
- Onzonz AS
- Odyssea AS
- Opportuna AS
- Oron AS
- Olivia AS
- Onsagers AS
- Onsagers AS
- Oxitrate AS
- One AS
- Okana AS
- Ottersland AS
- Oyatel
- Oyatel AS
- Oyatel AS
- Onca AS
- Onida AS
- Obtn AS
- Osjo Holding AS
- Obligasjon 1 AS
- Oh Dear AS
- Oslo Helsebygg AS
- Onepointfive Opportunities AS
- Oslo Båtmannsforretning A/S
- Osloveien 4 AS
- Oslo Leilighetshotell AS
- Obligo Invest AS
- Oald Invest AS
- Occi Invest AS
- Oslo Handelsbygg AS
- Occi Holding AS
- Omnispace Norway AS
- Ons 3 AS
- Oslo Line AS
- Ons 1 AS
- Obligasjon 2 AS
- Ons 2 AS
- Oslo Kombinasjonseiendom AS
- Osloveien Invest AS
- Osc 2 AS
- Osloveien 708 AS
- Olsvik Santos
- Ofh Eiendom AS
- Olav Andsten AS
- Oslo Artistformidling
- Odin Helgheim
- Oslo Konserthus AS
- Oktant Invest AS
- Ottestad Holding AS
- Obligo Holding AS
- Ormerudveien Boligutvikling AS
- Ocean Yield ASA
- Ok - Eiendom AS
- Octillion Invest AS
- Optimo Prosjekt AS
- Osloveien 630 AS
- Ohb Eiendomsholding AS
- Oslobukta Promotion AS
- Odden 4 AS
- Oslo-Satsingen AS
- Opf Eiendomsandeler AS
- Obelix Capital AS
- Oslobukta Serveringssteder AS
- Omp Capital AS
- Og Invest AS
- Opes Gruppen AS
- Og Bolig AS
- Ortho Norway Ltd
- Ocean Oasis AS
- Omnia Invest AS
- Onna Greens AS
- Ons Prosjekt AS
- Oslo Kontorfellesskap AS
- Olivia Tjuvholmen
- Only Bubbles AS
- Oslo Vikar
- Oslo Faks
- Ons Invest II AS
- Onepointfive Capital Partners AS
- Oslo Fringe Invest AS
- Obs Lager 5 AS
- O.N. Sunde A/S
- Obligo Real Estate AS
- Offentlig Eiendom Bodø AS
- Oslo Handelsportefølje Eiendom AS
- Oslo Urban Development AS
- Offentlig Bygg Hønefoss AS
- Opco & Partners AS
- Olav Ingstadsvei 7 AS
- Obh Midco 2 AS
- Optimize Asbjørn Johnsen
- Offentlig Eiendomsinvest i AS
- Obligo Investment Management AS
- Ons Ship Finance AS
- Odin Viking Spv AS
- Oslo Bay District AS
- Oslo Handelsportefølje Invest AS
- Obligo Business Services AS
- Onh Grenseveien 71 AS
- Oslo Properties Norway AS
- Orion Engineering Services AS
- Oslo Konserthus Restaurantdrift
- Oslo Assembly Production AS
- Oslo private gymnasium AS
- Olivia Aker Brygge
- Oscars gate Holding AS
- Oslo Capital Partners AS
- Open Infra Norge
- Oslo vest Handelseiendom AS
- Ole Slorer Eiendom AS
- Opplysningskontoret for Nikotinprodukter
- Opplysningskontoret for Nikotinprodukter
- Opp Klinikken Group AS
- Oslo vest Holding AS
- Organo Gold Norway AS
- Obligo Global Infrastruktur II AS
- Ons Ship Invest 1 AS
- O.N. Sunde Holding AS
- Oslo Private Gymnasium - Opg
- Oslo Hi-Fi Center
- Oscars gate 19 Eiendom AS
- Orkidehøgda 4-6-10 AS
- Oscars gate 47/49 i AS
- Oscar Jacobson Aker Brygge
- Oslo Cancer Cluster Innovasjonspark AS
- Oris Dental Aker Brygge
- Obligo Global Infrastruktur II Norge AS
- Oil & Vinegar Aker brygge
- Orkidehøgda 4-6-10 Holding AS
- Olafsen Walther B K-H
- Ole Fredrik Barmo Hvinden-Haug