| Acronym | Definition |
|---|
| AdTI➣Alexis de Tocqueville Institute |
| AdTI➣Acid Drainage Technology Initiative (est. 1995; West Virginia University) |
| AdTI➣Advance Display Technologies, Inc. |
| AdTI➣American Data Technology, Inc. (Research Triangle Park, NC) |
| AdTI➣Assisted Dying for the Terminally Ill (bill) |
| AdTI➣Akademia Doskonalenia Technik Informatycznych (Polish: Computer Science Training Academy; EU) |