| Abbreviation | Definition |
|---|---|
| MCF | Militairy Christian Fellowship |
| MCFF | Mini Club Flying Finns |
| MCLA | Midnight Club Los Angeles |
| MCM | Muschi Club Munchen |
| MCMA | Metropolitan Club Managers Association |
| MCOV | Mastiff Club of Victoria |
| MCP | Magalluf Club Pass |
| MCP | Magaluf Club Pass |
| MCRC | Mid Carolina Rifle Club |
| MCRC | Middlebury College Rugby Club |
| MCSC | Marion County Soccer Club |
| MCVC | Meadow Creek Vaulting Club |
| MCWK | Modelleisenbahn Club Wittenbach Kronbuhl |
| MDCC | Mason Dixon Corvette Club |
| MDFC | Monash Dance Fusion Club |
| MDFC | Mountain District Football Club |
| MDMC | Mad Dog Motorcycle Club |
| MDOC | Manchester and District Orienteering Club |
| MDRC | Mason Dixon Rifle Club |
| MDRC | Multi Disciplinary Robotics Club |