| Abbreviation | Definition |
|---|---|
| ESNF | European Superconductivity News Forum |
| ESNM | European Society of Neurogastroenterology and Motility |
| ESNM | European Society of Neurogastroenterology Motility |
| ESNO | European Specialist Nurses Organisations |
| ESO | European School Oncology |
| ESO | European Semester Officer |
| ESO | European Southern Ob |
| ESO | European Southern Observatory |
| ESO | European Standardization Organizations |
| ESOA | European School of Antennas |
| ESOC | European Space Operations Centre |
| ESOC | European Stroke Organisation Conference |
| ESOC | European Symposium of Organic Chemistry |
| ESOE | European Society for Organizational Excellence |
| ESOF | European Science Open Forum |
| ESOF | European Strategic Office Fund |
| ESOP | European Society of Oncology Pharmacy |
| ESOP | European Symposium On Programming |
| ESOPS | European Symposium On Polymer Spectroscopy |
| ESOR | European School of Radiology |