| Acronym | Meaning |
| CD | Candela |
| IFF | Identification |
| HTI | Haiti (ISO 3166 Trigram) |
| III | Sichuan Yi Language (ISO 639-2 Code) |
| ACARS | Aircraft Communication Reporting System |
| VVAF | Vietnam Veterans Of America Foundation |
| MBCC | Migratory Bird Conservation Commission (U.S.) |
| TRACON | Terminal Radar Approach Control |
| UNICEF | United Nations Children's Fund (originally The United Nations International Children's Emergency Fund) |
| NA | Nauruan Language (ISO 639-1 Code) |