ESR
- E.S.R., Inc.
- EISCAT Svalbard radar
- ESR Cayman
- ESR Rīga
- ESR Technology
- Earlham School of Religion
- East Somerset Railway
- Eastar Jet
- Eastern Suburbs Railway
- Effort Sharing Regulation
- Electro-slag remelting
- Electron spin resonance
- Electron spin resonance dating
- Electronic Staff Record
- Emergency speed restriction
- Emile Smith Rowe
- Equivalent series resistance
- Eric S. Raymond
- Erythrocyte sedimentation rate
- Estrogen receptor
- Ethnikó Simvúlio Radhiotileórasis
- European Society of Radiology
- European Sociological Review
- European Union
- European regulation
- Extended-support release
- Fulham FC
- Green House Gas
- Institute of Environmental Science and Research
- M2010 Enhanced Sniper Rifle
- Member States
- Ricardo García Posada Airport
- Solar and Heliospheric Observatory