| Acronym | Definition |
|---|
| EUI | European University Institute |
| EUI | Extended User Interface |
| EUI | Enterprise User Interface |
| EUI | End User Interface |
| EUI | Engineering User Interface |
| EUI | Effective User Interface |
| EUI | Extended Unique Identifier (networking devices) |
| EUI | Energy Utilization Index (US Department of Energy) |
| EUI | Euroclear UK & Ireland |
| EUI | Ethnography of the University Initiative |
| EUI | Economist Intelligence Unit |
| EUI | Electronic Unit Injector |
| EUI | End User Identity |
| EUI | Escuela Universitaria de Informática (Spain) |
| EUI | Emailing under the Influence |
| EUI | Enhanced User Interface (Telabs) |
| EUI | Energy Use Intensity (DoE, EIA) |
| EUI | End User Information |
| EUI | End-System Unique Identifier |
| EUI | Exams Unlimited, Inc. |
| EUI | Executive User Interface |
| EUI | Ecola Universitaria d'Infermeria |
| EUI | Education Unlimited International |