| Acronym | Meaning |
| NY | New York (postal Symbol) |
| DUI | Data Use Identifier - Data Use Institute - Davis Unified Ignition - Diving Unlimited International - Documento ?nico De Identidad - Documento Unico De Importaci›n - Driving Under The Influence - Duke University Improv |
| 2D | Two |
| ACARS | Aircraft Communication Reporting System |
| TTO | Trinidad And Tobago (ISO 3166 Trigram) |
| RADC | Region Air Defence Commander |
| EG | Egypt (ISO 3166 Digram; FIPS 10-4 Country Code) |
| SIYSS | Stockholm International Youth Science Seminar |
| SWAT | Special Weapons And Tactics |
| NVEOL | Night Vision And Electro-Optics Laboratory |