Firma C - Bygdøy
- Cesium AS
- Chromart AS
- Centaurus AS
- Cnygaardoffshore
- Creg AS
- Chogori AS
- Cannae AS
- Cebenotto AS
- Catrico AS
- Ceman AS
- Cameon ANS
- Carlot AS
- Cruella AS
- Connecticom AS
- Cranberry AS
- Chloe AS
- Carla AS
- Chrimapa AS
- Cbm Holding AS
- Carina Solhaug
- Christensen Import
- Compass Invest AS
- Cornea Invest AS
- Ceara Holding AS
- Cogitare Magnum AS
- Christiania Ferjedrift AS
- Christian Volden
- Carlot Kapital AS
- Camocim Holding AS
- Cah II AS
- Cornelia-Stiftelsen
- Cgs Holding AS
- Ck Hch AS
- Complete Renhold AS
- Christina Håmpland
- Collett Invest AS
- Christian Schaanning
- Coach Traberg
- C&C Eiendomsutvikling AS Konkursbo
- C&C Eiendomsutvikling AS Konkursbo
- C E Eiendom AS
- Christian Helling-Haugsnes
- Carnot Efficient Energy AS
- Chubinidze Paata Mamagulashvili
- Coron Huchard Mess
- Cheng the Present
- Cecile Holst Design
- Charity Van Delft
- Charlotte Thiis Evensen
- Cafe Villa Grande
- Caroline Margrethe Grønbekk
- Christian Brede Moe Consulting
- Carl-Johan Bergqvist Unionsklinikk
- Coucheron-Aamot Jann Adrian
- C S Fotografi Charlotte Spetalen
- Care By Tine V/Tine Lundin