| Abbreviation | Definition |
|---|---|
| A/B | Able Seaman |
| AA | Airman Apprentice |
| AAWO | Anti-Air Warfare Officer |
| AAWS | Anti-Air Warfare System |
| AB1 | Aviation Boatswain's Mate Petty Offficer 1st Class |
| AB2 | Aviation Boatswain's Mate Petty Officer 2nd Class |
| AB3 | Aviation Boatswain's Mate Petty Officer 3rd Class |
| ABA1 | Aviation Boatswain's Mate (airship Rigger) Petty Officer 1st Class |
| ABA2 | Aviation Boatswain's Mate (airship Rigger) Petty Officer 2nd Class |
| ABA3 | Aviation Boatswain's Mate (airship Rigger) Petty Office 3rd Class |
| ABAA | Aviation Boatswain's Mate Airman Apprecntice |
| ABAC | Aviation Boatswain's Mate (airship Rigger) Chief Petty Officer |
| ABAN | Aviation Boatswain's Mate Airman |
| ABAR | Aviation Boatswain's Mate Airman Recruit |
| ABC | Aviation Boatswain's Mate Chief Petty Officer |
| ABCM | Aviation Boatswain's Mate Master Chief Petty Officer |
| ABCS | Aviation Boatswain's Mate Senior Chief Petty Officer |
| ABE1 | Aviation Boatswain's Mate (launching & Recovery) Petty Officer 1st Class |
| ABE1 | Aviation Boatswain's Mate (launching & Recovery) Petty Officer 1st Class |
| ABE2 | Aviation Boatswain's Mate (launching & Recovery) Petty Officer 2nd Class |