| Acronym | Meaning |
| BI | Bislami Language (ISO 639-1 Code) |
| USPTO | United States Patent And Trademark Office |
| SSG | Guided Missile Submarine (retired US Navy Hull Classification) |
| TSOP | Tactical Standing Operation Procedure |
| MBTA | Massachusetts Bay Transportation Authority - Migratory Bird Treaty Act (U.S.) |
| PLI | P?li Language (ISO 639-2 Code) |
| AKA | Akan Languages (ISO 639-2 Code) |
| FF | Fula Language (ISO 639-1 Code) |
| MJ | Millijoule |
| TUN | Tunisia (ISO 3166 Trigram) |