| Acronym | Meaning |
| JN | Jan Mayen Island (FIPS 10-4 Territory Code) |
| SIGCAT | Special Interest Group For CD-ROM Applications And Technology |
| UJTL | Universal Joint Task List |
| JAL | Japan Airlines |
| CD1 | Cluster Of Differentiation 1 (a Small Gene Family) |
| BCFG | Patchy Fog (METAR Code) |
| ILC | International Law Commission - International Linear Collider |
| MAPS | Monitoring Avian Productivity And Survivorship |
| UE | Unit Of Employment |
| RFEF | Real Federaci›n Espa?ola De Fœtbol (Spanish For Royal Spanish Football Federation) |