Bedrift C - Økern
- Cosin AS
- Cofra B.V.
- Caravanvegen
- Cristian/reserve
- Cillion AS
- Cillion AS
- Candycreature AS
- Cofra B.V.
- Canlup AS
- COWI AS
- Com4 AS
- Com4 AS
- Condalign AS
- Conex AS
- Cencom AS
- Certior AS
- Contiga AB
- Colonialgrossisternes Forening
- Cetinic Katarina
- Candia Holding AS
- Candia Eiendom AS
- Colin Nkee
- Cns Titan AS
- Coach Pedersen
- Christiansen Jewelry
- Canine Technologies AS
- Centiga Norge AS
- Claire Woman
- Camilla Talleraas Enk
- Catena Eiendom AS
- Cybe Solutions AS
- COWI AS Avd Oslo
- Celestis Capitalis AS
- Careium Norge AS
- Chadi Kanawati
- Charlotte Qvale
- Charles Chovookaran
- Coach Bierke
- Camilla Nygård
- Chauhan Holding AS
- Chauhan Beauty AS
- Chrono Holding AS
- Caravan Rice AS
- Credit Control AS
- Condis Økern
- Cba Fagformidling AS
- Chooly Gruppen AS
- Conor Skandinavia AS
- Carla Goldstein Rocchi
- Carl Zeiss Vision AB
- COWI Bil Oslo
- Club Lily Country
- Chr. Liven Holding AS
- Careium Norge AS Avd Oslo
- Christiania Sneskuter Forening
- Celie Studio Ludvigsen
- Chef Edu Kiocho
- Cobra Demo Person
- Carl Frisen Holding AS
- Coop Mega Hasle torg
- Ca Auto Finance Norge AS
- Cicilie Aalberg Nordic Choice Hotels
- Coven Lunatic Sandra Nystad Johansen
- Clarion Hotel Stavanger AS Gunnar Harald Pettersen