| Abbreviation | Definition |
|---|---|
| MAB | Mobile Assault Bridge |
| MAB | Mother of All Bomb |
| MAC | Maintenance Allocation Chart |
| MAC | Make A Change |
| MAC | Mandatory Access Control |
| MAC | Maneuver Area Command |
| MAC | Message Authentication Code |
| MAC | Military Airlift Command (Now Air Mobility Command) |
| MAC | Military Armament Company |
| MAC | Military Armament Corporation |
| MAC | Military Armistice Commission |
| MAC | Military Assistance Command |
| MAC | Mission Assurance Category |
| MAC | Mortuary Affairs Center |
| MACA | Military Aid to the Civil Authorities |
| MACA | Military Assistance to Civil Authorities |
| MACATAK | Maintenance Capabilities Attack Model |
| MACB | Multinational Acquisition and Contracting Board |
| MACC | Mobile Armored Computerized Combatant |
| MACC | Morale, Action, Communication, and Coordination |