FIEI
| Acronym | Definition |
|---|---|
| FIEI | Facultad de Ingeniería Electrónica e Informática (Spanish: School of Electrical and Computer Engineering; Peru) |
| FIEI | Federazione Italiana Emigrazione Immigrazione (Italian: Italian Emigration-Immigration Federation) |
| FIEI | Female Intervention Efficacy Index |
| FIEI | Fellow of the Institution of Engineers of Ireland |