| Acronym | Definition |
|---|
| UoI➣University of Ioannina (Ioannina, Greece) |
| UoI➣Unit of Interchange |
| UoI➣University of Illinois |
| UoI➣University of Iowa |
| UoI➣Union Of Ontario Indians |
| UoI➣Unit of Inquiry (education) |
| UoI➣Unit Of Issue |
| UoI➣Université de l'Océan Indien (French: University of the Indian Ocean; educational program; various locations) |
| UoI➣Urban Outfitters, Inc. |
| UoI➣Unless Otherwise Instructed |
| UoI➣Utilities Operating Instruction |