| Brian K. Sanderscompany | | | Active | 1975 |
| Brosnan Risk Consultants, Ltd.company | | Las Vegas, NV | Relinquished | 2423 |
| Bulwerks L.L.C.company | | North Las Vegas, NV | Relinquished | 2407 |
| Bulwerks Securitycompany | | North Las Vegas, NV | Relinquished | 2407 |
| Bumpers Auto Recovery Service DBA Pathfinderscompany | | | Expired | 495 |
| Burse Security Agencycompany | | | Inactive | 756 |
| Ca Casino Property 1 LLCcompany | | Las Vegas, NV | Abeyance | 2713 |
| Cambridge Security Services Corp.company | | Las Vegas, NV | Expired | 1773 |
| Capital City Patrol & Transitcompany | | | Active | 1595 |
| Capitol Guard & Patrol, Inc.company | | Las Vegas, NV | Expired | 1249 |
| Carson Valley Investigation/Consultcompany | | | Abeyance | 2103 |
| Cascadia Global Security LLCcompany | | Las Vegas, NV | Inactive | 4036 |
| Cause Investigations Forensic Engineering Servicescompany | | Henderson, NV | Active | 457 |
| Cause & Origin Investigationscompany | | | Abeyance | 526 |
| Centerra Services International, Inc.company | | | Expired | 2232B |
| Century Security Management Of Las Vegas Corporationcompany | | Las Vegas, NV | Relinquished | 1315 |
| Certified Fraud Examinations And Recoverycompany | | | Inactive | 1649 |
| Certified Talent, LLCcompany | | Newfields, NH | Relinquished | 2758 |
| Cesc LLCcompany | | Las Vegas, NV | Expired | 1686 |
| Cesc Private Investigationscompany | | Las Vegas, NV | Expired | 1686 |
| Chad Mitchellcompany | | | Active | 2783 |
| Chaos Security LLCcompany | | Las Vegas, NV | Expired | 2832 |
| Charlie Mike Protective Services, LLCcompany | | Las Vegas, NV | Active | 2216 |
| Chenega Global Protection, LLCcompany | | Chantilly, VA | Inactive | 2996 |
| Choicepoint Government Services Inc.company | | | Not Licensed | 113 |
| Christopher Campbellcompany | | | Active | 4314 |
| Ciss Security Specialistcompany | | | Relinquished | 1402 |
| Citadel Security Group, LLCcompany | | Nixa, MO | Active | 4608 |
| Citywide Security Services, LLCcompany | | Boulder City, NV | Relinquished | 1786 |
| Claims Verification Incorporatedcompany | | Sacramento, CA | Expired | 1219 |
| Clubright Compliance Consultingcompany | | | Expired | 1795 |
| Clubright, LLCcompany | | | Expired | 1795 |
| C&m Fire Investigations Inccompany | | | Status not verified | 292 |
| Coast 2 Coast Crime Prevention & Security Servicescompany | | Las Vegas, NV | Expired | 1986 |
| Coast Criminal & Civilcompany | | | Status not verified | 4010 |
| Collette's Consultantscompany | | Las Vegas, NV | Expired | 681 |
| Collins & Tabor Investigators, LLCcompany | | | Relinquished | 2334 |
| Command Dogscompany | | | Expired | 2146 |
| Command Protection Services Inccompany | | | Status not verified | 109 |
| Commercial Protective Services, Inc.company | | Henderson, NV | Expired | 741 |
| Condor Security Of America, Inc.company | | Salinas, CA | Expired | 2137 |
| Confidential Investigative Servicescompany | | Murrieta, CA | Inactive | 1689 |
| Consolidated Claim Service, Inccompany | | | Status not verified | 348 |
| Contact Security, Inccompany | | | Status not verified | 396 |
| Contingency Concepts, LLCcompany | | Freehold, NJ | Relinquished | 2864 |
| Cooley's PI Servicecompany | | | Expired | 3049 |
| Corecivic, Inc.company | | Brentwood, TN | Active | 2135 |
| Core Group Securitycompany | | | Active | 1558 |
| Corporate Intelligence International, Inccompany | | | Status not verified | 268 |
| Corporate Security International/Bobby Tomljenovichcompany | | | Not Licensed | 04-056 |