| Acronym | Definition |
|---|
| IWTC➣International Women's Tribune Centre (New York, NY) |
| IWTC➣Irish Web Technology Conference |
| IWTC➣International Water Technology Conference |
| IWTC➣Invacare World Team Cup (wheelchair tennis) |
| IWTC➣International Workshop on Tropical Cyclones |
| IWTC➣Industrial Water Treatment Consulting (Australia) |