| Acronym | Definition |
|---|
| MCAC | Midlands Collegiate Athletic Conference (National Association of Intercollegiate Athletics) |
| MCAC | Medicare Coverage Advisory Committee |
| MCAC | Maryland Coordination and Analysis Center |
| MCAC | Mechanical Contractors Association of Canada |
| MCAC | Maryland Correctional Adjustment Center (Baltimore, MD) |
| MCAC | Mattawoman Creek Art Center (Maryland) |
| MCAC | Middlesex County Automobile Club (UK) |
| MCAC | Mission de Coopération et d'Action Culturelle (French: Mission for Cooperation and Cultural Action) |
| MCAC | Multi-Mission Craft Air Cushion |
| MCAC | Major Crimes Assessment Committee (Texas) |
| MCAC | Multi-purpose Craft Air Cushion |
| MCAC | Maryland Citizens' Advisory Commission |