ISEI
| Acronym | Definition |
|---|---|
| ISEI | International Society on Early Intervention |
| ISEI | International Symposium on Electrical Insulation (IEEE) |
| ISEI | International Society for Ecological Informatics (Adelaide University; Australia) |
| ISEI | International Society for Educational Information (Japan) |
| ISEI | Integrated Science Education Initiative (St. Lawrence University; New York) |
| ISEI | Institute for Systems Engineering and Informatics (Ispra, Italy) |