| Acronym | Meaning |
| NEI | National Eye Institute - Not Enough Information - Nuclear Energy Institute |
| SETAC | Society For Environmental Toxicology And Chemistry |
| BSD | Bahamian Dollar (ISO 4217 Currency Code) -Berkeley Software Distribution (distinct From BSoD) |
| MF | Mayotte (FIPS 10-4 Territory Code) - Megafarad |
| THA | Thai Language (ISO 639-2 Code) |
| SAE | Society Of Automotive Engineers - Stamped Addressed Envelope |
| UAR | Uniformly At Random (probability) - United Arab Republic - Uni›n Argentina De Rugby (Spanish For Argentine Rugby Union) |
| CART | Championship Auto Racing Teams (now Defunct) |
| NF | Norfolk Island (ISO 3166 Digram) |
| RFC | Request For Comments - Royal Flying Corps (WWI Precursor To RAF) |