| Nimi | Paikkakunta |
|---|---|
| Carmenia Oy | Oulu |
| Cartman Oy | Oulu |
| Casa Nova Lkv Oy | Oulu |
| Casadoor Oy | Oulu |
| Casahouse Oy | Oulu |
| Castro Kodit Oy | Oulu |
| Casualriina | Oulu |
| Cave Canem Oy | Oulu |
| CC Infra Oy | Oulu |
| CC-Lines | Oulu |
| Cenome | Oulu |
| Centrel | Oulu |
| CeresCon Oy | Oulu |
| CFTN Distribution Oy | Oulu |
| CHAPERONE | Oulu |
| Chemfy OY | Oulu |
| Chemtone Oy | Oulu |
| Chipoint Hoitopalvelut | Oulu |
| Chocotel Oy | Oulu |
| Chunxing (Finland) Oy | Oulu |
| Churrasco Oy | Oulu |
| Cimmi Oy | Oulu |
| Cisti Connexion | Oulu |
| Citymar Oy | Oulu |
| Clarified Networks Oy | Oulu |
Yritysesittely