RG

RG, Rg or rg may refer to:

People

 * Pete RG (fl. 1998–2015), an American singer-songwriter
 * Razor Ramon RG or Makoto Izubuchi (born 1974), a Japanese professional wrestler
 * RG Sharma (born 1987), an Indian international cricketer
 * RG Snyman (born 1995), South African rugby union player

Places

 * RG postcode area, the postal address for the area of Reading and surrounding towns in England
 * Province of Ragusa, Sicily, Italy, vehicle registration prefix

Computing and telecommunications

 * Radio Guide, used to specify Coaxial cables (including a list of RG cable types)
 * ReplayGain, a proposed standard for normalizing the perceived loudness of digital audio playback
 * ResearchGate, a social network for scientists and researchers

Military

 * RG-6 grenade launcher, a Russian weapon
 * RG-42, a Russian fragmentation grenade
 * armored vehicles designed by Land Systems OMC, South Africa (including a list of RG-type vehicles)

Other uses in science and technology

 * RG, or Rail Gourmet, a food brand and a division of SSP Group
 * Radius of gyration, several related measures of the size of an object, a surface, or an ensemble of points
 * Reachability Graph, a formal verification technique
 * Renormalization group, in physics, a mathematical apparatus allowing investigation of a system at different size scales
 * RG color space, a color space
 * rg chromaticity, a two-dimensional color space in which there is no intensity information
 * Rhamnogalacturonans, a type of pectin
 * Roentgenium, symbol Rg, a chemical element

Sport

 * RG Heidelberg, a rugby union club from Heidelberg, Germany
 * Rhythmic gymnastics
 * Right guard, a position in American football

Other uses

 * Direction centrale des renseignements généraux or Renseignements Généraux, a defunct French interior intelligence agency
 * Ibanez RG, a series of electric guitars produced by Hoshino Gakki
 * r > g, an economics equation fundamental to Capital in the Twenty-First Century
 * Regional Gathering, an event hosted by local chapters of American Mensa
 * RG Financial Corporation, a financial holding company located in San Juan, Puerto Rico
 * RG Line, a Finnish shipping company
 * RG Veda, a Japanese manga first published in 1989
 * Race Gurram, 2014 Indian film abbreviated as RG
 * Röhm Gesellschaft or RG, a German brand of firearms (including a list of RG-type models)
 * Rossiyskaya Gazeta, a Russian newspaper
 * Varig (1927-2006), Brazilian airline (IATA code RG)
 * A RG (Roof Garden) level in a building, also called Lower Penthouse (LPH) or a level where there is a rooftop garden in some buildings