| Acronym | Meaning |
| ACK | Acknowledge (telecommunications; Cf. NAK) |
| EZLN | Ej?rcito Zapatista De Liberaci›n Nacional (Spanish |
| MCI | Microwave Communications |
| ETF | Emergency Task Force (a Special Police Unit |
| OSIA | (U.S.) On-Site Inspection Agency |
| NKVD | Narodnyi Komissariat Vnutrennikh Del (Russian People's Commissariat Of Internal Affairs) (1934-1954) |
| N/K/A | Now Known As |
| VEB | Venezuelan Bolvar (ISO 4217 Currency Code) |
| SW | South-West - Sweden (FIPS 10-4 Country Code) |
| BDO | Battle Dress Overgarment |