RTG

RTG may refer to:


 * RTG (trainset) (Rame à Turbine à Gaz), a French gas turbine trainset
 * RTG Turboliner, US import of the French trainset
 * Radeon Technologies Group, a division of AMD
 * Radio Télévision Guinéenne, Guinea
 * Radioisotope thermoelectric generator
 * Regular tree grammar, a formal grammar
 * Renal threshold of glucose, level at which glucose is excreted in urine
 * Retargetable graphics, AmigaOS API
 * Royal Thai Government
 * Rubber tyred gantry crane
 * Frans Sales Lega Airport IATA code