| Abbreviation | Definition |
|---|---|
| MACS | Mobile Armored Crew Station |
| MACS | Modular Artillery Charge System |
| MACS | Modular Artillery Charge System (artillery) |
| MACSAT | Multiple Access Commercial Satellite |
| MACV | Military Assistance Command of Vietnam |
| MACV | Military Assistance Command, Vietnam |
| MACV | Military Assistanee Command Vietnam |
| MACVSOG | Military Assistance Command, Vietnam - Studies and Observation Group |
| MAD | Magnetic Anomaly Detector |
| MAD | Mechanized Artillery Division |
| MAD | Military Air Distress |
| MAD | Missile Attack and Defense |
| MAD | Mobile Armor Division |
| MADAM | Material Development Automated Milestones |
| MADCAP | Mobilization and Deployment Capability Assurance Project |
| MADCAP | Mosaic Array Data Compression And Processing |
| MADCAP | Mosaic Array Data Compression and Processing ( Module) |
| MADCP | Mortuary Affairs Decontamination Collection Point |
| MADEF | Mission Area Deficiency |
| MADEP | Master Defence Power |