| Acronym | Definition |
|---|
| IHST➣International Helicopter Safety Team (Alexandria, VA) |
| IHST➣Industrial Hygiene and Safety Technology, Inc. (various locations) |
| IHST➣Institute of the History of Science and Technology (Russia) |
| IHST➣Intentional Hand Steadiness Test |
| IHST➣Institute of Homeland Security Training (St. Clair County Community College; Port Huron, MI) |