EFIS
| Acronym | Definition |
|---|---|
| EFIS | Electronic Flight Instrument System |
| EFIS | European Federation of Immunological Societies (Berlin, Germany) |
| EFIS | Electronic Flight Information System |
| EFIS | ERO Frequency Information System (Europe) |
| EFIS | European Forest Information System |
| EFIS | Exterior Finish Insulation System (construction material) |
| EFIS | English for International Students |