| Acronym | Definition |
|---|
| IFES | International Fellowship of Evangelical Students |
| IFES | International Foundation for Election Systems |
| IFES | Instituições Federais de Ensino Superior (Portuguese: Federal Institutions of Higher Education; Brazil) |
| IFES | In-Flight Entertainment System (aviation) |
| IFES | Image Feature Extraction System |
| IFES | Irmandade da Festa do Espirito Santo |
| IFES | Instituto Femenino de Educación Superior (Spanish) |
| IFES | IPEDS (Integrated Postsecondary Education Data System) Fall Enrollment Survey (various universities) |