| Acronym | Definition |
|---|
| IIT | Indian Institute of Technology |
| IIT | Illinois Institute of Technology |
| IIT | Indiana Institute of Technology (Ft. Wayne, IN) |
| IIT | Italian Institute of Technology |
| IIT | Intelligent Information Technologies (Indiana) |
| IIT | Islamic Institute of Toronto (Toronto, Canada) |
| IIT | Institute for Information Technology |
| IIT | Information Integration Theory |
| IIT | Iligan Institute of Technology |
| IIT | Institute for Information Technology (Canada) |
| IIT | Instituto de Investigación Tecnológica (Madrid, Spain) |
| IIT | Individual Income Tax |
| IIT | Image-Intensifier Tube |
| IIT | Intra-Industry Trade (economics) |
| IIT | Integrated Information Technology |
| IIT | Intensive Insulin Therapy (medical) |
| IIT | Information and Instructional Technologies (various schools) |
| IIT | Investigator-Initiated Trial |
| IIT | International Institute of Telecommunications |
| IIT | Ion Implantation Technology |
| IIT | International Investment Trust (Taiwan) |
| IIT | Interactive Information Technology (est. 1998; Venlo, Limburg, Netherlands) |
| IIT | Individual Inclusive Tour (travel) |
| IIT | International Institute of Travel |
| IIT | Institute for Interactive Technology (University of Alabama) |
| IIT | Information Integration Technology |
| IIT | Integrated Idea Team (US Army) |
| IIT | Integrated Information Transport |
| IIT | Integrated Installation Team |
| IIT | Information and Infrastructures Technologies, Inc. (Electronic Warfare Associates, EWA) |
| IIT | Indus Integrated Technologies |