MRG

MRG can mean


 * Millennium Research Group
 * Minorities Research Group
 * Minority Rights Group International
 * Mouvement des Radicaux de Gauche, later Left Radical Party, France
 * Red Hat Messaging/Realtime/Grid
 * Mad River Glen, ski area in Fayston, Vermont
 * The IATA code for Mareeba Airfield in Queensland, Australia
 * A government-provided Minimum Revenue Guarantee, offsetting volume risk in a public–private partnership