IEIS
| Acronym | Definition |
|---|---|
| IEIS | Integrated Earth Information Server |
| IEIS | Institute for European Intelligence and Security (Brussels, Belgium) |
| IEIS | Institute for European and International Studies (Luxembourg) |
| IEIS | Institute for Environmental and Industrial Science (Texas State University) |
| IEIS | Indian Experiment of Infarct Survival (medical study) |
| IEIS | Idiopathic Environmental Intolarence Syndrome |
| IEIS | Inductors of Endogenous Interferon Synthesis |
| IEIS | Immediate Endoscopic Injection Sclerosis (gastroenterology) |