EIF
- .ee
- Easter Island Foundation
- Echogenic intracardiac focus
- Eclaireurs israélites de France
- Edinburgh International Festival
- Edsbyns IF
- Ekenäs IF
- Empirical influence function
- Enhanced integrated framework
- Enterprise interoperability framework
- Entertainment Industry Foundation
- Eskilsminne IF
- Eukaryotic initiation factor
- European Internet Foundation
- European Interoperability Framework
- European Investment Fund
- European industry federation
- Exponential integrate-and-fire