A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 1
| Cadrexport com (4) | Cameron (5) |
| Canon Norge as (6) | Capgemini (7) |
| Capus Express (5) | Capus Stavanger (11) |
| CBA consultants AS (34) | CBA Fagformidling (6) |
| CBA Fagformidling AS (160) | CBA Recruitment (20) |
| CBA Vestfold AS (6) | Centerpoint AS (20) |
| CEP Gruppe (6) | Choice Club (28) |
| Choice Hotels Scandinavia (38) | Christiania Personell (22) |
| Cisco (25) | Cisco Systems (29) |
| Coca-Cola (4) | Color Line AS (4) |
| Computas AS (5) | ConocoPhillips (23) |
| Coop.no (8) | Covance (4) |
| COWI as (9) | Cramo AS (6) |
| Cranemaster (4) | Cubus (5) |