| C & K Johansen, Horsens A/S | 8700 | Horsens |
| C H Evensen Industriovner AS | 1618 | FREDRIKSTAD |
| Camozzi Automation AB | 213 75 | MALMÖ |
| Camteknik i Ulricehamn AB | 523 37 | Ulricehamn |
| Carbomax AB | 721 32 | Västerås |
| Carl Zeiss AB | 102 54 | Stockholm |
| Carlhag AB | 653 43 | Karlstad |
| CARLSTAD MACHINETOOLS AB | 654 65 | Karlstad |
| Carpenter Powder Products AB | 644 21 | Torshälla |
| Ceetec A/S | 5580 | Nørre Aaby |
| Certex Svenska AB | 187 30 | Täby |
| Christian Berner AB | 435 22 | Mölnlycke |
| Chuckcenter AB | 262 73 | Ängelholm |
| Clip-Lok SimPak | 302 94 | Halmstad |
| Cognex Danmark | 2900 | Hedensted |
| Collinder Märksystem AB | 234 35 | Lomma |
| Colly Components AB | 164 94 | KISTA |
| Condair AB | 136 50 | Jordbro |
| Constructor Sverige AB | 400 53 | Göteborg |
| Coromatic AB | 168 67 | Bromma |
| Curtiss-Wrigth | 732 22 | Arboga |
