| Acronym | Meaning |
 | FAQ | Frequently Asked Questions (sometimes Pronounced Fak) |
| MRO | Maintenance |
| NT | Iraq-Saudi Arabia Neutral Zone (ISO 3166 Digram; Obsolete 1993) - Northern Territory (Australia) (postal Symbol) - Northwest Territories (Canada) (postal Symbol) - National Trust (UK) |
| AR | Argentina (FIPS 10-4 Country Code; ISO 3166 Digram) - Arkansas (postal Symbol) - Armour |
| UUB | Ununbium (temporary Superheavy Chemical Element Name) |
| NIMBY | Not In My Back Yard |
| ISRO | Indian Space Research Organisation |
| TR | Turkish Language (ISO 639-1 Code) |
| SSA | Cargo Submarine (US Navy Hull Classification) |
| FMCA | Federal Magistrates' Court Of Australia (used For Citing Decisions Of The FMC Other Than Family Law Decisions) |
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