ENR
- Bureau of Energy Resources
- East Norfolk Railway
- Egyptian National Railways
- Energizer Holdings
- Engineering News-Record
- Ennore railway station
- Enoyl-acyl carrier protein reductase
- Esercito Nazionale Repubblicano
- Esquimalt and Nanaimo Railway
- European New Right
- Excess Noise Ratio
- Rádio e Televisão de Portugal