| Acronym | Definition |
|---|
| WAPI | WLAN Authentication and Privacy Infrastructure |
| WAPI | Wired Authentication and Privacy Infrastructure |
| WAPI | Windows Application Programming Interface |
| WAPI | Workflow Api |
| WAPI | Words and Pictures (underground hiphop platform and movement) |
| WAPI | Water Pasteurization Indicator |
| WAPI | World Association of Professional Investigators |
| WAPI | West Africa Peacebuilding Institute |
| WAPI | Workflow Application Programming Interface |
| WAPI | Web Assisted Personal Interviewing |
| WAPI | American Pipit (Anthus rubescens, bird species) |
| WAPI | Washington Area Partnership for Immigrants |
| WAPI | Washington Association of Physicians of Indian Origin |
| WAPI | Western Association of Property Inspectors |
| WAPI | Western Antique Powerland, Inc. |
| WAPI | WWW Application Programming Interface (Tascomm) |
| WAPI | WordNet Advanced Python Interface |
| WAPI | Weighted Annualized Premium Income (insurance) |