ISTN
| Acronym | Definition |
|---|---|
| ISTN | Institut Sains dan Teknologi Nasional (Indonesian: National Institute of Science and Technology) |
| ISTN | International Smart Tan Network (trade association) |
| ISTN | Industrial Science & Technology Network (est. 1997; York, PA) |
| ISTN | International Seminar on Teletraffic and Network |
| ISTN | Incision Site Tissue Necrosis (surgery) |
| ISTN | Institute for the Study of Traditional Naturopathy |