| IWIS | Intelligent Well Interface Standardisation (oil & gas) | 智能好接口标准化(油气及) |
| IWIS | Interceptor Weapons Instructor School | 截击机武器教官学校 |
| IWIS | International Wheat Information System | 国际小麦信息系统 |
| IWIS | Institution-Wide Information Strategies | 机构范围的信息战略 |
| IWIS | Institution Wide Information Strategies | 机构范围的信息战略 |