| Abbreviation | Definition |
|---|---|
| ISU | Independent Study Unit |
| ISU | Indiana State University |
| ISU | International Space University |
| ISU | Iowa State University |
| ISU | Isabela State University |
| ISUP | International Summer University Program |
| ISUP | International Summer University Programme |
| ISURP | Iowa State University Research Park |
| ISVR | Institute of Sound and Vibration Research |
| ISYE | School of Industrial and Systems Engineering |
| IT | Institute of Technology |
| ITA | Aeronautics Technology Institute (Brazil) |
| ITA | Information Technology Academy |
| ITA | Instituto Tecnológico de Aeronáutica |
| ITA | Intelligent Teaching Assistant |
| ITA | International Teaching Assistant |
| ITAC | Instructional Technology And Academic Computing |
| ITAMP | Institute for Theoretical Atomic and Molecular Physics |
| ITAP | Individual Training Assistance Program |
| ITAP | Information Technology Associates Program |