| Caroline Blixt AB | Hammarö | 0 tkr |
| Caroline Englund Design Konsult AB | Karlstad | 0 tkr |
| Carrotech AB | Karlstad | 0 tkr |
| Carsam AB | Karlstad | 0 tkr |
| Carservice Karlstad AB | Karlstad | 0 tkr |
| Carwash i Varmland AB | Karlstad | 0 tkr |
| Casum AB | Örebro | 0 tkr |
| Cative Holding AB | Karlstad | 0 tkr |
| Caynan Taxi AB | Karlstad | 0 tkr |
| CC - Corpus Elath AB | Karlstad | 0 tkr |
| CC - Corpus Rental AB | Karlstad | 0 tkr |
| CCL Holding AB | Karlstad | 0 tkr |
| Cebb Invest AB | Karlstad | 0 tkr |
| CELBYPRO AB | Karlstad | 0 tkr |
| Cellcomb Holding AB | Säffle | 0 tkr |
| Cenote Holding AB | Karlstad | 0 tkr |
| Centercon Holding AB | Karlstad | 0 tkr |
| Centrum för Sexologi och Relationer Helena Engelbrekt AB | Hammarö | 0 tkr |
| CF Läkarkonsult AB | Örebro | 0 tkr |
| CFN Holding AB | Karlstad | 0 tkr |
| CGC Aktiebolag | Karlstad | 0 tkr |
| CG TV AB | Vålberg | 0 tkr |
| Chaos AB | Karlstad | 0 tkr |
| Charles Invest AB | Karlstad | 0 tkr |
| Charlotta Ivansson Konsult AB | Karlstad | 0 tkr |
| Cherubic AB | Karlstad | 0 tkr |
| CH Henriksson Invest Holding AB | Karlstad | 0 tkr |
| Christer Arnesson Holding i Karlstad AB | Karlstad | 0 tkr |
| Christianett AB | Karlstad | 0 tkr |
| Christian Holm Public Affairs AB | Karlstad | 0 tkr |
| Christian & Malmén Entreprenad AB | Karlstad | 0 tkr |
| Christina Lundqvist AB | Karlstad | 0 tkr |
| Christina Lundqvist Holding AB | Karlstad | 0 tkr |
| Christoffer Höjer AB | Karlstad | 0 tkr |
| Christoffer-Robins mat AB | Karlstad | 0 tkr |
| Chris Valle Consulting AB | Karlstad | 0 tkr |
| Cilantro i karlstad AB | Karlstad | 0 tkr |
| Cinema Concert Club AB | Karlstad | 0 tkr |
| City-Garaget i Karlstad AB | Karlstad | 0 tkr |
| C K Björklund Holding AB | Hammarö | 0 tkr |
| CK Holding Karlstad AB | Karlstad | 0 tkr |
| CKMT AB | Karlstad | 0 tkr |
| Claes Malmqvist AB | Karlstad | 0 tkr |
| Clean Skin Karlstad AB | Huddinge | 0 tkr |
| Cloudberry Utveckling AB | Karlstad | 0 tkr |
| Cloudberry Utveckling II AB | Karlstad | 0 tkr |
| Cloudberry Utveckling III AB | Karlstad | 0 tkr |
| Cloudberry Wind AB | Karlstad | 0 tkr |
| CMB Invest AB | Karlstad | 0 tkr |
| CMBP Förvaltning AB | Karlstad | 0 tkr |