Bedrift C - Skøyenåsen
- Citrophile
- Competent AS
- Coopa AS
- Citydekorasjon AS Konkursbo
- Cybulska Designer
- Chan Desmond
- Christensen Irene
- Claudette Vigueras
- Christian Våge
- Citydekorasjon AS Konkursbo
- Christiania Taxi
- Christiania Taxi AS
- C. Nielsen Eiendom AS
- Christer J. Holtan
- Clean&Shine Ewelina Laskowska
- Constantin-Petrut Udeanu
- Cp Bygg Cezary G Podlaszczyk
- City Konsulent Tjenester Serife Karakus
- China-Norway Culture Promotion Elise Li Huei Chen