| 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 |