| Acronym | Definition |
|---|
| ISTH➣International Society on Thrombosis and Haemostasis (Carrboro, North Carolina) |
| ISTH➣Interamerican Society for Tropical Horticulture |
| ISTH➣Irrua Specialist Teaching Hospital (formerly Otibhor Okhae Teaching Hospital; est. 1993; Irrua, Nigeria) |
| ISTH➣International Standards Team Harmonisation |
| ISTH➣International School of Theory in the Humanities (Santiago de Compostela, Spain) |
| ISTH➣Inter-Spike Time Interval Histograms (auditory nerves) |