| Acronym | Meaning |
| SEAFDEC | Southeast Asian Fisheries Development Center |
| UPF | Universitat Pompeu Fabra (Catalan |
| S/SSM | Surface-to-Subsurface Missile |
| CNY | Chinese Yuan Renminbi (ISO 4217 Currency Code) |
| NIU | Niue (ISO 3166 Trigram) |
| UPTN | Universal Personal Telecommunications Number - Upper Peninsula Telehealth Network |
| ZS | Zettasecond |
| ZF | Zettafarad |
| CU | Cuba (FIPS 10-4 Country Code; ISO 3166 Digram) |
| PGP | Pretty Good Privacy |