| Acronym | Definition |
|---|
| JSI➣John Snow, Inc (Boston, MA) |
| JSI➣Jozef Stefan Institute (est. 1949; Slovenia) |
| JSI➣Journal of School Improvement |
| JSI➣Journal of Social Issues |
| JSI➣Judicial Studies Institute (Dublin, Ireland) |
| JSI➣Jantzi Social Index (Michael Jantzi Research Associates) |
| JSI➣Japan Securities Incorporated (Vietnam) |
| JSI➣Japanese Society for Immunology (Tokyo, Japan) |
| JSI➣Skiathos, Greece - Skiathos (Airport Code) |
| JSI➣Japanese Standards Association |
| JSI➣Japan Spirit Importation (French automobile club) |
| JSI➣JCALS (Joint Computer-Aided Acquisition and Logistics Support) Standard Interface |
| JSI➣Julian Street Inn (San Jose, CA homeless shelter) |
| JSI➣Joint Surface Index |
| JSI➣Joint Support Item |
| JSI➣Java Services Infrastructure |
| JSI➣Jaclyn Smith International |
| JSI➣Journal of Stomatological Investigation (oral medicine) |