| Abbreviation | Definition |
|---|---|
| ERA | Ecodynamics Research Associates |
| ERA | Eddystone Remington Arms |
| ERA | Electronic Realty Associates |
| ERA | Energy Risk Associates |
| ERA | English Racing Automobiles |
| ERBA | Embarras River Basin Agency |
| ERC | Enhanced Recovery Company |
| ERC | Espresso Royale Cafe |
| ERC | Ethiopian Railways Corporation |
| ERC | Evaluation Research Corporation |
| ERC | Expresso Royal Cafe |
| ERCI | Environmental Risk Communications Inc |
| ERD | Eagle Ridge Developments |
| ERD | Eastern Region Dealers |
| ERDC | Energy Research & Development Corporation |
| ERG | Eastern Research Group |
| ERG | Edoardo Raffineria Garrone |
| ERI | Eldorado Resorts Inc |
| ERI | Electronics Research Inc |
| ERI | Employment Resources, Inc. |