| Abbreviation | Definition |
|---|---|
| MACC | Multi Agency Communications Center |
| MACCS | Marine Air Command and Control System |
| MACDIS | Military Assistance For Civil Disturbances |
| MACE | Mechanized Armored Combat Exosuit |
| MACG | Marine Air Control Group |
| MACG | Marshaling Area Control Group |
| MACH | Military Advanced Combat Helmet |
| MACI | Military Adaptation of Commercial Items |
| MACM | Missile Application Condensed Message |
| MACO | Marshalling Area Control Officer |
| MACO | Military Assault Command Operations |
| MACO | Military Assistance Counter Offensive |
| MACOM | Major Army Command |
| MACOM | Major Command (Army) |
| MACP | Marine Aviation Campaign Plan |
| MACP | Military aid to the civil power |
| MACP | Modern Army Combatives Program |
| MACP | Mortuary Affairs Collection Point |
| MACR | Missing Air Crew Report |
| MACS | Military Air Command Series |