1,697 registered lobbyists
| Name | Clients | Expenditures |
|---|---|---|
| Clark Kaericher | 1 | -- |
| Claudette McDowall | 1 | -- |
| Cliff Cain | 1 | -- |
| Cody Holliday | 22 | -- |
| Cody M Bauer | 3 | -- |
| Colin Beere | 1 | -- |
| Colin Marsh | 1 | -- |
| Colleen O'Connor Toberman | 1 | -- |
| Colleen Sipiorski | 1 | -- |
| Connie Jorstad | 1 | -- |
| Cooper Silburn | 3 | -- |
| Corey Day | 1 | -- |
| Corey Van Denburgh | 1 | -- |
| Cory R Bennett | 10 | -- |
| Courtney Jasper | 34 | -- |
| Courtney Johnson | 1 | -- |
| Courtney Schaff | 1 | -- |
| Courtney Toretto | 1 | -- |
| Craig A Johnson | 1 | -- |
| Craig M Rushing | 1 | -- |
| Craig Mischo | 1 | -- |
| Craig R Andresen | 1 | -- |
| Craig Sondag | 17 | -- |
| Cristen Incitti | 1 | -- |
| Cristina Aranguiz | 1 | -- |