IWIS
| Acronym | Definition |
|---|---|
| IWIS | International Wheat Information System |
| IWIS | Institution-Wide Information Strategies |
| IWIS | IBM (International Business Machines Corporation) Workers International Solidarity (international union) |
| IWIS | Intelligent Well Interface Standardisation (oil & gas) |
| IWIS | International Workshop on Information Security (telecommunications; annual conference) |
| IWIS | Interceptor Weapons Instructor School |