Bedrift O - Fredrikstad
- Oftamed AS
- Organisasjonsutvikling
- Ordinary AS
- Ophta AS
- Offisersporten AS
- Ortopediskomakeren AS
- Ophion AS
- Oec AS
- Optimalph
- Oryton AS
- ORKLA ASA
- Omsorgssentre øst
- Otterstad Syvdrops
- Olof Bergqvist
- Ove Tøpfer
- One Pixel AS
- Orkide Massasje
- Oliversen Osteopati
- Ochana Sorin
- Osman Taxi
- Oslofjorden Eiendomsservice DA
- Oda Gjevikhaug
- Oasen Tannklinikk
- Olan Invest AS
- Oma 2020
- Onsøy Sokn
- Oasen Tannklinikk
- Oma 2020
- Oladammen Borettslag
- Onsøy Borettslag
- Opus Invest AS
- Odra Eiendom AS
- Onsøy Borettslag
- Oladammen Borettslag
- Outland Fredrikstad
- Overblikk Regnskap AS
- Olha Radichuk
- Omar Transport
- Oktav Reklamebyrå AS
- Ottestad Stine
- Olsen Invest
- Oc Gustavsen AS
- Olsen Billakkering AS
- Oø Holding AS
- Object Generation AS
- Ogre Holding AS
- Odd Christensen
- Oslogate 6 AS
- Onstad Invest AS
- Olsen Vedlikeholdsservice
- Oddvar Høyum
- Opentek Stumberg
- Oleg Kuyanov
- Oleksandra Skurtolenko
- Olena Kozachenko
- Oleh Tachuk
- Olsun Holding AS
- Orkhan Aliyev
- Oddmund Hjørnegård
- Oleksandr Posobylo
- Onsøy Synssenter AS
- Odinsøy Vikinglag
- Ohn Montering AS
- Optimal Entreprenør AS
- Oda Jenssen
- Omberg Transport
- Otta Vikhals
- Olsen Coaching
- Omikron Elektro AS
- Opplev verden AS
- Omar Abazaid
- Olsen Glass AS
- O3m Holding AS
- Optimus Personal AS
- O3m Eiendom AS
- Oslo Liftutleie
- Ove Ellila
- O.Smehaug
- Omsorgssentre - Aktiv Omsorg
- Ole Christian Gullvåg
- Orgelbaumeister Matthias Becker
- Ove Roger Skår
- Olaussen Training Unit
- Oldervik Psykomotorisk Fysioterapi
- Oleanatangen Parkeringslag Sameie
- Ole Bakker Holding AS
- Ove Skår Invest AS
- One Click Pulse AS
- Oleanatangen Parkeringslag Sameie
- Oscar R Johansen
- Oksana Volodumurivna Mashkina
- Ole Peko Sørensen
- Osteopati i Fredrikstad
- OBOS Østfold - Fredrikstad
- Olsen Karoline Femtehjel
- Olympic Brygga AS Konkursbo
- OBOS Eiendomsmeglere Fredrikstad
- Olympic Brygga AS Konkursbo
- Omhu Skin Care AS
- OCH Ortopedi Fredrikstad
- Ord i Grenseland
- Oris Dental Farmannsgate
- Omsorgstjenester Av Birkals
- O-B Invest AS
- Onninen Express Fredrikstad
- Oksana Mykhalirna Dykunets
- Ove Kristianslund Dr
- Ove Kristianslund Dr
- Ole Hafsmo Endringspartner
- Ole Martin Forsetlund
- Ole Morten Skårød
- Ole Fredrik Lund
- Ole Johnny Nordrum
- Ole Jakob Høkeli
- Ole Jakob Mathisen
- Ole Henrik Bjørnå
- O. D. Holding AS
- Oliwia Galuhn-Malys
- Ole Christian Stubberud
- Optimus AS C Bygg
- Original Knut Fjellhøi Henriksen
- Odds Konditori og Bakeri AS
- Olsen Sports Consulting Quickness
- Oss Mennesker i Mellom
- Oldfruen Anne Marit Svandal
- Olzen Treslakting Rune Olsen
- Okapi Records Sven Lundestad
- Odd Christian Danbolt Consulting
- Olsen Marie Kristin Ek
- Original Tekst Tor Andersen
- Odins Spear Krystian Szczepanski
- Omnipresence Productions Håvard Ellefsen
- O Duenes & P Johannesen ANS
- Omvik Medier og Andre Tjenester
- Optimisten Consulting. Fred Roger Olsen
- Odd Fellow Loge 95 Isegran
- Ole Smed Altmuligmann V/Ole Martin Tvete
- Olav Eliassen Ok Bygg og Data
- Odd Fellow Loge Nr 12 Kongssten
- Odd Fellow Loge Nr 45 Baune