| Abbreviation | Definition |
|---|---|
| CLEVBROWNS | cleveland browns |
| CMFA | Cocalico Midget Football Association |
| CMFA | Coquitlam Minor Football Association |
| CMFL | Central Maine Football League |
| CMFL | Central Midlands Football League |
| CMFL | cHARLEROI mIDGET fOOTBALL lEAGUE |
| CMFL | Cumberland Midget Football League |
| COAT | Champion Off All Time |
| COFT | CERN Outdoor Football Tournament |
| COMFL | Central Ontario Minor Football League |
| CONCACAF | Confederation Of North Central American And Caribbean Association Football |
| CONIFA | Confederation of Independent Football Associations |
| COYD | Come On You Daggers |
| COYW | Come On You Wells |
| CPA | Can't Pass Again |
| CPFC | Carss Park Football Club |
| CPFC | Crystal Palace Football Club |
| CPFL | Central Plains Football League |
| CPFL | Couch Potato Football League |
| CR | Cristiano Ronaldo |