'''GRG''' or ''variant'' thereof, may refer to: * Gerontology Research Group (GRG), American social sciences research group * GRG Banking, a Chinese corporation manufacturing ATMs * Global Restructuring Group of Royal Bank of Scotland * ''GrG'', the astronomical abbreviation for group of galaxies * ''grg'', the ISO:639 language code for the Gira language * Gathorne Robert Girdlestone (1881–1950), British surgeon * GRG Matriculation Higher Secondary School, in Coimbatore, Tamil Nadu, India * Georges River Grammar School, in Georges River, New South Wales *Grogol railway station, in Jakarta, Indonesia {{dab}}