WIIS
| Acronym | Definition |
|---|---|
| WIIS | Window Internet Information Server |
| WIIS | Women in International Security |
| WIIS | Wildlife Incident Investigation Scheme (UK) |
| WIIS | Wang Integrated Imaging System (image based document storage) |
| WIIS | Weather Image Information System (meteorological software) |
| WIIS | Watson Institute for International Studies (Brown University) |
| WIIS | Workshop on International Investment Statistics (Organisation for Economic Cooperation and Development) |
| WIIS | Western Insurance Information Services |