| Acronym | Definition |
|---|
| ERG | Emergency Response Guidebook |
| ERG | Electronics Research Group |
| ERG | European Regulators Group (EU) |
| ERG | Environmental Research Group |
| ERG | Electroretinogram |
| ERG | Energy and Resources Group (University of California, Berkeley) |
| ERG | Emergency Response Guide (DOT) |
| ERG | European Reintegration Grants (EU) |
| ERG | Ecole de Recherche Graphique (French) |
| ERG | Endicott Research Group, Inc |
| ERG | External Reference Group (UK) |
| ERG | Existence, Relatedness and Growth (motivation theories) |
| ERG | Emergency Response Group |
| ERG | ETS-Related Gene |
| ERG | English Resource Grammar |
| ERG | Export Risk Guarantee (Switzerland) |
| ERG | Environics Research Group |
| ERG | Ejército Revolucionario Guevarista (Spanish: Guevarist Revolutionary Army) |
| ERG | Engineering Research Group |
| ERG | Educational Reference Group |
| ERG | Economic Research Group (Bangladesh) |
| ERG | Ernst-Reuter-Gesellschaft (German) |
| ERG | Ecosystem Research Group |
| ERG | Earthworm Research Group (UK) |
| ERG | Epilepsy Research Group |
| ERG | Evaluation Reference Group |
| ERG | Entertainment Resources Group |
| ERG | Essex Repeater Group |
| ERG | Esquerda Republicana Galega (Spanish) |
| ERG | Engineering Radio Guild |
| ERG | Erasmus-Reinhold-Gymnasium (German school) |
| ERG | Endocannabinoid Research Group |
| eRG | eRomania Gateway (Romania) |
| ERG | Environmental Resources Group |
| ERG | Executive Review Group |
| ERG | External Review Group |
| ERG | Environmental Restoration Group Inc |
| ERG | Earth Resource Group |
| ERG | Engineering Resources Group (Chicago, Illinois) |
| ERG | Edoardo Raffinerie Garrone |
| ERG | Egitim Reformu Girisimi (Turkish: Education Reform Initiative) |
| ERG | E-Business Resource Group |
| ERG | Euro Realty Group |
| ERG | Endocrine/Reproductive/Gastrointestinal (unit) |
| ERG | Empirical Research Group, Incorporated |
| ERG | Extended Range Gamma (patented SAIC gamma detector) |
| ERG | EOSIDS Review Group |
| ERG | Ethane Rich Gas |
| ERG | Energy Reuse Group |
| ERG | Equipment Requirements Guide |
| ERG | Exponential Reliablity Growth |
| ERG | Emergency Recovery Group (US Navy Minewarfare ships) |
| ERG | Education Research Group (various organizations) |