| Abbreviation | Definition |
|---|---|
| ESHI | East Side Hebrew Institute |
| ESI | Economic Science Institute |
| ESI | Elevate Salon Institute |
| ESI | Elevate Salon Institute i |
| ESIC | European Steel Institutes Confederation |
| ESMI | Engineering Summer Math Institute |
| ESPI | European Space Policy Institute |
| ESRI | Economic And Social Research Institute |
| ESRI | Erdas Science Research Institute |
| ESRI | Ergonomics and Safety Research Institute |
| ESTI | Emergency Services Training Institute |
| ESWI | EURO Summer and Winter Institutes |
| ESWI | EURO Summer Winter Institutes |
| ETFI | European Tourism Future Institute |
| ETFI | European Tourism Futures Institute |
| ETI | Electrical Training Institute |
| ETI | Emergent Technologies Institute |
| ETI | Employee Training Institute |
| ETI | Equipment and Tool Institute |
| ETI | Experimental Therapeutics Institute |