RMG

RMG could apply to any
 * A common abbreviation for ready-made garment
 * Bangladeshi RMG Sector, ready-made garments
 * Royal Mail Group, London Stock Exchange symbol
 * RMG Connect, former division of JWT, US
 * Revolutionary Marxist Group (Canada), 1970s political organization
 * RMG (program), electronic structure simulation
 * Team RMG, a German auto racing team
 * Rhenish Missionary Society (RMG), a former Protestant missionary society

Technology and military

 * RMG, a multipurpose variant of Russian RPG-27 rocket launcher

Entertainment

 * RMG (band)
 * Rover's Morning Glory, radio talk-show by WMMS, Cleveland, Ohio, US