| Acronym | Meaning |
| IPR | In Progress Review - Intellectual Property Rights - Intelligence Production Requirement |
| CESS | Centre For Earth Science Studies (India) |
| INFOSEC | Information Security |
| DCC | Digital Command Control (model Railroading) - Direct Client-to-Client (Internet Relay Chat) - Dismounted Close Combat |
| ICTH | Island Closest To Heaven/Hell Final Fantasy VIII |
| YI | Serbia And Montenegro (deprecated FIPS 10-4 Country Code |
| MPSRON | Maritime Propositioning Ship Squadron |
| BBL | Be Back Later - Bird Banding Laboratory - British Basketball League |
| GULCR | Grupo De Usuarios De Linux De Costa Rica |
| J1 | Joint [Manpower &] Personnel Directorate |