| Abbreviation | Definition |
|---|---|
| AGCS | Aerographer's Mate Senior Chief Petty Officer |
| AGM-84 | Air-to-Ground Missile 84 (Harpoon) |
| AGNA | Anglo-German Naval Agreement |
| AIR3 | Airman Third Class |
| AK1 | Aviation Storekeeper Petty Officer 1st Class |
| AK2 | Aviation Storekeeper Petty Officer 2nd Class |
| AK3 | Aviation Storekeeper Petty Officer 3rd Class |
| AKAA | Aviation Storekeeper Airman Apprentice |
| AKAN | Aviation Storekeeper Airman |
| AKAR | Aviation Storekeeper Airman Recruit |
| AKC | Aviation Storekeeper Chief Petty Officer |
| AKCM | Aviation Storekeeper Master Chief Petty Officer |
| AKCS | Aviation Storekeeper Senior Chief Petty Officer |
| AL1 | Aviation Electronicsman Petty Officer 1st Class |
| AL2 | Aviation Electronicsman Petty Officer 2nd Class |
| AL3 | Aviation Electronicsman Petty Officer 3rd Class |
| ALAA | Aviation Electronicsman Airman Apprentice |
| ALAM | Advanced Land-Attack Missile |
| ALAN | Aviation Electronicsman Airman |
| ALAR | Aviation Electronicsman Airman Recruit |