| Abbreviation | Definition |
|---|---|
| IWS | WWU Institute for Watershed Studies |
| IWT | Institute for Women and Technology |
| IWU | Illinois Wesleyan University |
| IWU | Indiana Wesleyan University |
| IWU | Institut Wohnen und Umwelt, GmbH |
| IYCB | Indian Institute of Chemical Biology |
| IZSC | Institute of Zoology Science for Conservation 2000 |
| J.D. | Doctor of Laws [Lat.] |
| JAAT | Jackson Academy of Applied Technology |
| JAB | Juvenile Aid Bureau |
| JABU | Joseph Ayo Babalola University |
| JAC | Japanese Appreciation Club |
| JAE | Joint Admissions Exercise |
| JAG | Jobs For American Graduates |
| JAM | Jaguars Against Madness |
| JAM | Jam Academic Multimedia |
| JAM | Joining For Academic Mania |
| JAM | Junior Attendance And Motivation |
| JAM | Juniors At Milton |
| JAMES | Joint Accreditation Monitoring Evaluation System |