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