IT I
ESI stands for:
- Earth Similarity Index , a scale for assessing the similarity of an exoplanet to the earth
- Edge Side Includes , a markup language for web servers
- Electrospray ionization , a method of ion generation
- Emergency Severity Index , a procedure for the initial assessment of emergency patients
- Environmental Seismic Intensity , an intensity scale for earthquakes, see ESI scale
- Ernst Strüngmann Institute , a private research institute in Frankfurt am Main
- Erwin Schrödinger Institute for Mathematical Physics at the University of Vienna
- European Stability Initiative , a German think tank
- European Structural and Investment Funds , a summary of European funding instruments in the funding period 2014–2020
- European Surgical Institute , a training center for minimally invasive surgery in Norderstedt
- ESI Group , a provider of scientific software
as a distinguishing mark on license plates:
- Poland: Powiat Sieradzki in the Łódź Voivodeship
Esi stands for:
- Esi (given name) , a female given name
esi stands for:
- Northern Alaska Inupiaq (ISO-639-3 code), dialect of Inupiaq within Inuktitut, the Eastern Canadian dialect group of the Eskimo languages
