| California Mexico Reliability Center | Academic & Science |
| Coal Mining Research Company | Academic & Science |
| Caribbean Marine Research Center | Academic & Science |
| China Meat Research Center | Academic & Science |
| CFS ME Research Collaborative | Academic & Science |
| Credit Management Research Centre | Academic & Science |
| Crime Mapping Research Center | Academic & Science |
| Copenhagen Muscle Research Centre | Academic & Science |
| Commerce One, Inc. | Business |
| Certified Mold Remediation Contractor | Business |
| Cleveland Model Railway Club | Community |
| Christa McAuliffe Residential Community | Community |
| Central Minnesota Retriever Club | Community |
| Center for Media Religion and Culture | Community |
| Clay Madsen Recreation Center | Community |
| Contemporary Music Research Centre | Community |
| Community Migrant Resource Centre | Community |
| Central Mississippi Residential Center | Community |
| Centre for Medieval and Renaissance Culture | Community |
| Community Managed Resource Center | Community |
| Crossville Model Railroad Club | Community |
| Community Mobilization Resource Coalition | Community |
| Construction Materials Research Center | General |
| Chicago Match Race Center | General |
| Chesapeake Multicultural Resource Center | General |
| Conflict Minerals Resource Center | General |
| Cheyenne Mountain Reentry Center | General |
| Coastal Marine Resource Center | General |
| Cobalt Mediated Radical Coupling | General |
| Citizens for Marijuana Regulation and Control | General |
| Carnegie Mellon Rocket Command | General |
| Caribbean Motor Racing Championship | General |
| Connecticut Manufacturing Resource Center | General |
| Crowd Management Research Council | Governmental |
| Carroll Manor Recreation Council | Governmental |
| Chicagoland Manufacturing Renaissance Council | Governmental |
| California Motorized Recreation Council | Governmental |
| Carroll Manor Rec Council | Governmental |
| Cambridge Medical and Rehabilitation Center | Medical |
| Canadian Motorsport Racing Club | Regional |
| Canadian Motosport Racing Corp | Regional |
| Canadian Midwifery Regulators Council | Regional |
