| CAKE | |
| Calcapp | |
| Calejo Hybrid Intelligence AB | |
| Calliditas Therapeutics AB | |
| Callista Enterprise AB | Stockholm |
| Caltech AB | |
| Calvia | Västra Götaland |
| Camelonta | Stockholm |
| Camido Webbyrå | |
| Camurus AB | |
| Canary Bit AB | |
| Candela | |
| Cangoroo | |
| Cangoroo Tech | |
| Canon Svenska AB | Stockholm |
| Cantargia AB | |
| Capax Instruments AB | Stockholm |
| Capcito Finance AB | |
| Capio AB | |
| Capio S:t Görans Sjukhus | |
| Capitainer | |
| Cappy | |
| Captario | |
| Carbiotix AB | |
| CarbonCloud | |
| Carcare | |
| Cardia | |
| Cardo Health AB | |
| Care to Translate | |
| Carlstedt Elektronik AB | Halland |
| Carmack | |
| Carmenta | Västra Götaland |
| CarSwipe AB | |
| Cartina AB | |
| Cascable AB | |
| Cascade Drives AB | |
| Causiq AB | |
| Cavidi AB | |
| CBD Solutions AB | |
| Cedur AB | |
| CEI-Europe AB | Östergötland |
| Celcibus AB | |
| CellaVision | |
| Cellcolabs | |
| Cellcolabs | |
| Cellectricon | |
| Cellevate | |
| Cellfion | |
| Cellink | |
| Celltech Abatel AB | |