| Abbreviation | Definition |
|---|---|
| ABMPH3 | Aviation Boatswain's Mate (plane Handler) Petty Officer 3rd Class |
| ABNB | Amphibious Base Naval Base |
| ABU1 | Aviation Boatswain's Mate ((utility)) Petty Officer 1st Class |
| ABU2 | Aviation Boatswain's Mate (utility) Petty Officer 2nd Class |
| ABU3 | Aviation Boatswain's Mate (utility) Petty Officer 3rd Class |
| ABUAA | Aviation Boatswain's Mate (utility) Airman Apprentice |
| ABUAN | Aviation Boatswain's Mate (utility) Airman |
| ABUAR | Aviation Boatswain's Mate (utility) Airman Recruit |
| ABUC | Aviation Boatswain's Mate (utility) Chief Petty Officer |
| AC1 | Air Controlman Petty Officer 1st Class |
| AC1 | Air Traffic Controller Petty Officer 1st Class |
| AC2 | Air Controlman Petty Officer 2nd Class |
| AC2 | Air Traffic Controller Petty Officer 2nd Class |
| AC3 | Air Controlman Petty Officer 3rd Class |
| AC3 | Air Traffic Controller Petty Officer 3rd Class |
| ACAA | Air Contronman Airman Apprentice |
| ACAA | Air Traffic Controller Airman Apprentice |
| ACAD | Aviation Cadet |
| ACAN | Air Control Man Airman |
| ACAN | Air Traffic Controller Airman |