| Acronym | Definition |
|---|
| ISTR➣I Seem to Remember |
| ISTR➣It Stands To Reason |
| ISTR➣I Seem To Recall |
| ISTR➣Internet Security Threat Report (Symantec) |
| ISTR➣Institute of Safety in Technology and Research (UK) |
| ISTR➣International Society for Third-Sector Research |
| ISTR➣Internet Security Threat Report |
| ISTR➣Internationales Steuerrecht (German: International Tax) |
| ISTR➣Interoperability Standards Technical Reports |
| ISTR➣Information Security and Testing Research |
| ISTR➣Institute for Science Training and Research |