EIF stands for:
- Echogenic intracardiac focus, a term related to an ultrasound exam
- Eclaireurs israélites de France, a French Scouting organization
- Edinburgh International Festival, a festival of performing arts
- Ekenäs Idrottsförening, a football club in Finland
- Empirical influence function, used for measuring statistical robustness
- Enterprise Instrumentation Framework, a diagnostic and instrumentation toolset for .NET Framework
- Entertainment Industry Foundation, a non-profit charitable organization of the entertainment industry
- Eukaryotic initiation factor, a protein family
- European Industry Federation, a type of trade union organization
- European Internet Foundation
- European Interoperability Framework
- European Investment Fund, an agency of the European Union
- Exponential Integrate-and-Fire, a biological neuron model