| Acronym | Meaning |
| ERV | Endogenous RetroVirus |
| NDAA | U.S. National Defense Authorization Act |
| GIGO | Garbage In Garbage Out (computing) |
| NPL | National Priorities List -Nepal (ISO 3166 Trigram) |
| SU | Soviet Union (ISO 3166 Digram; Obsolete 1992) - Sudan (FIPS 10-4 Country Code) |
| SEC | U.S. Securities And Exchange Commission -Security - Southeastern Conference |
| KA | Georgian Language (ISO 639-1 Code) |
| DTO | Disruptive Technology Office (was ARDA) |
| PARWIG | Power Augmented Ram Wing In Ground (aeroplane Wing Shape) |
| TCAA | Top Counter-Assault Agents |