| Abbreviation | Definition |
|---|---|
| MARFORSOUTH | Marine Corps Forces, South |
| MARFORSTRAT | United States Marine Corps Forces, United States Strategic Command |
| MARFS | Multienvironment Active Radio Frequency Seeker |
| MARG | Marine Amphibious Readiness Group |
| MARILYN | Manning and Recruiting in the Lean Years of the Nineties |
| MARINCEN | Maritime Intelligence Center |
| MARINE | Muscles Are Required, Intelligence Not Essential |
| MARINE | My A** Rides In Navy Equipment |
| MARINE | My A** Riding In Navy Equipment |
| MARINE | My Ass Rides In Navy Equipment |
| MARINES | My A** Rides In Navy Equipment and Ships |
| MARINES | My Ass Rides In Navy Equipment and Ships |
| MARKS | Modern Army Record Keeping System |
| MARLE | Marine Liaison Element |
| MARLO | Marine Liaison Officer |
| MAROP | Marine Operators |
| MARPAC | Canadian Forces, Maritime Forces Pacific |
| MARPOL | International Convention For The Prevention of Pollution From Ships |
| MARRES | Manuel Radar Reconnaissance Exploitation System |
| MARS | Marine Accident Reporting Scheme |