GRG or ''variant'' thereof, may refer to:
*
Gerontology Research Group
The Gerontology Research Group (GRG) based in Los Angeles, California, US, is a global non-profit scientific organization of researchers in various fields of gerontology, primarily concerned with validating the ages of, recording and researching ...
(GRG), American social sciences research group
*
GRG Banking, a Chinese corporation manufacturing ATMs
* Global Restructuring Group of
Royal Bank of Scotland
The Royal Bank of Scotland Public Limited Company () is a major retail banking, retail and commercial bank in Scotland. It is one of the retail banking subsidiaries of NatWest Group, together with NatWest and Ulster Bank. The Royal Bank of Sco ...
* ''GrG'', the astronomical abbreviation for
group of galaxies
A galaxy group or group of galaxies (GrG) is an aggregation of galaxies comprising about 50 or fewer gravitationally bound members, each at least as luminous as the Milky Way (about 1010 times the luminosity of the Sun); collections of galaxies ...
* ''grg'', the ISO:639 language code for the
Gira language
Gira, or Madi (Girara), is one of the Finisterre languages of Papua New Guinea
Papua New Guinea, officially the Independent State of Papua New Guinea, is an island country in Oceania that comprises the eastern half of the island of New Gui ...
*
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
{{dab