| Abbreviation | Definition |
|---|---|
| ISSVD | International Society for the Study of Vulvovaginal Disease |
| ISTE | International Society for Technology and Education |
| ITA | Interior Taxpayers Association |
| ITACCS | International Trauma Anesthesia and Critical Care Society |
| ITAO | Information Technology Association of Orissa |
| ITAP | International Technical Advisory Panel |
| ITC | Institute of Texan Cultures |
| ITC | International Trauma Care |
| ITEA | International Test and Evaluation Association |
| ITEP | Institute on Taxation and Economic Policy |
| ITEST | Information Technology Experiences for Students and Teachers |
| ITF | International Tuberculosis Foundation |
| ITH | Institute Of Tourism And Hotel |
| ITIS | Industry & Technology Intelligence Services |
| ITK | Inuit Tapiriit Kanatami |
| ITOPF | International Tanker Owners Pollution Federation |
| ITSA | Institute for Traffic Safety Analysis |
| ITSA | Intelligent Transportation Society of America |
| ITSC | Information Technology Standards Committee |
| ITSE | International Society for Technology in Education |