| Acronym | Meaning |
| AV | Avar Language (ISO 639-1 Code) |
| APL | A Programming Language - Acute Promyeloid Leukaemia - Anti-Personnel Landmine - Applied Physics Laboratory (Johns Hopkins University) |
| STANAG | (NATO) Standardisation Agreement |
| BGR | Bulgaria (ISO 3166 Trigram) |
| IU | Inuktitut Language (ISO 639-1 Code) |
| DRAGN | Double Radio Source Active Galactic Nucleus (dragon) |
| AAA | Administration |
| 4D | Four-dimensional (usually Three Spatial Plus One Temporal Dimension |
| HCI | Human-Computer Interaction/Interface |
| MK | Macedonian Language (ISO 639-1 Code) |