| Acronym | Meaning |
| ABW | Aruba (ISO 3166 Trigram) |
| ZIP | Zoning Improvement Plan Code |
| SE | Seychelles (FIPS 10-4 Country Code) - South-East - Sweden (ISO 3166 Digram) -Synthetic Environment - System Engineering |
| NETCU | (UK) National Extremism Tactical Co-ordination Unit |
| BZ | Belize (ISO 3166 Digram) |
| PAROS | Prevention Of An Arms Race In Outer Space (treaty) |
| SLK | Slovak Language (ISO 639-2 Code) |
| CPG | Clinical Practice Guideline |
| ICO | Intermediate Circular Orbit |
| NAK | Negative Acknowledge |