| 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 |