| Abbreviation | Definition |
|---|---|
| ITSU | Information Technology Support Unit |
| ITT | Invitation To Tender |
| IVDs | in-vitro diagnostic devices |
| IVG | International Voice Gateway |
| IWMS | Integrated Waste Management Strategy |
| IY | International Year |
| IZ | Industrial Zone |
| JAA | Joint Aviation Authorities |
| JAD | Joint Application Development |
| JAIL | Judicial Accountability And Integrity Legislation |
| JANAF | Joint Army Navy Air Force |
| JAPC | Joint Administrative Procedures Committee |
| JAPC | Joint Agency Public Consultation |
| JAR | Just Another Rifle |
| JB | Jaundiced Bureaucrat |
| JB | Judicial Branch |
| JBEA | Joint Board for Enrollment of Actuaries |
| JC | Job Corps |
| JC | Joint Chief |
| JC | Joint Communication |