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
Science and technology 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 Research group, at universities or research centers, research groups are commonly abbreviated this way. 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
See also RG1 (disambiguation) RG2 (disambiguation) RG3 (disambiguation) R&G (disambiguation) Rio Grande (disambiguation)