| Acronym | Meaning |
| SJA | Staff Judge Advocate (military Law) |
| HYE | Armenian Language (ISO 639-2 Code) |
| LJ | La Jolla - Larry Johnson - LaserJet - Library Journal - Linux Journal - LiveJournal - Ljubljana - Lord Justice Of Appeal -Sierra National Airlines (IATA Code) |
| SF&F | Science Fiction & Fantasy |
| POMDP | Partially Observable Markov Decision Process |
| J5 | Joint Strategic Plans & Policy Directorate |
| COCOM | Combatant Command (military) |
| COA | Concept Of Analysis - Course Of Action (military) |
| IK | Inupiaq Language (ISO 639-1 Code) |
| PLUTO | Pipe Line Under The Ocean |