| Acronym | Meaning |
| CIS | Canadian Interuniversity Sport - Commonwealth Of Independent States - Command And Information System - Communication And Information System |
| PCN | Pitcairn Islands (ISO 3166 Trigram) |
| POD | Port Of Debarkation |
| ACF | American Car And Foundry - American Culinary Federation - Administration For Children And Families |
| RC | See Entry |
| SSS | Siding Spring Survey - Side Side Side (an Acronym For Remembering Congruent Triangles) |
| KX | Cayman Airways (IATA Airline Designator) |
| GTQ | Guatemalan Quetzal (ISO 4217 Currency Code) |
| UMK | Uniwersytet Miko?aja Kopernika (Polish Nicolaus Copernicus University) |
| TUR | Turkish Language (ISO 639-2 Code) |