An erg is a unit of energy. Erg, Ergs or ERG may also refer to: Arts and entertainment Mikey Erg (born 1980), American musician Erg (comics), a fictional character in the Marvel Comics Universe Erg (Hyperion), a creature in the Hyperion Cantos series by Dan Simmons Organisations Education Reference Group, in Connecticut, US Eurasian Resources Group, a Luxembourgish mining and smelting company European Research Group, anti-EU group of British Conservative MPs Edoardo Raffinerie Garrone, an Italian energy company Efficiency and Reform Group, of the Cabinet Office of the UK Videlli, an Australian smart card ticketing system manufacturer formerly known as ERG Group Places English Riviera Geopark, in Torbay, England Erbogachen Airport (IATA code), Russia Science and technology Electron-releasing group Electroretinography, or electroretinogram Erg (landform), sand dune field ERG (gene) ERG theory, in psychology Exploration of Energization and Radiation in Geospace, now Arase, a Japanese scientific satellite Other uses Employee resource group, groups of employees who join together in their workplace Emergency Response Guidebook, a hazardous-materials reference book Erg (indoor rower) Erg (tug), a Canadian tug, sunk in Halifax Harbour in 1943 Ergative case