IHW
| Acronym | Definition |
|---|---|
| IHW | International Halley Watch |
| IHW | International Histocompatibility Workshop (immunology) |
| IHW | International Herpesvirus Workshop |
| IHW | Indigenous Health Worker (Australia) |
| IHW | International Hardware Week |
| IHW | International Housekeepers Week |
| IHW | Internet Health Watch |