| Acronym | Definition |
|---|
| ITSR | Iranian Transactions and Sanctions Regulations (US Treasury) |
| ITSR | Information Technology Strategic Research (US NASA) |
| ITSR | Institute for Treatment and Services Research (National Development and Research Institutes, Inc.; New York, NY) |
| ITSR | Information Technology Services Request |
| ITSR | Institute of Technical and Scientific Research (est. 2014; India) |
| ITSR | International Technical Standards and Regulations (International Finance Corporation; Washington, DC) |
| ITSR | Immunization Tracking System Repository |
