| Acronym | Definition |
|---|
| ISIT | International Symposium on Information Theory |
| ISIT | Institute of Systems, Information Technologies and Nanotechnologies (Fukuoka, Japan) |
| ISIT | Institute for Silicon Technology |
| ISIT | Fraunhofer Institut für SiliziumTechnologie |
| ISIT | Institut Supérieur d'Interprétariat et de Traduction (French: Superior Institute of Interpretation and Translation) |
| ISIT | Intensified Silicon Intensified Target |
| ISIT | Ink/Surface Interaction Tester (Segan Ltd) |
| ISIT | IOC Solutions and Implementation Team |
| ISIT | Istituto Sviluppo Immobiliare Torinese |