QG

QG may refer to:

Science and technology

 * Quantum gravity, a theory in physics that aims to unify general relativity and quantum mechanics
 * Quasigeostrophic, an atmospheric dynamics theory; see Geostrophic wind
 * Quadrature Generator; see quadrature amplitude modulation
 * Nissan QG engine, an automotive engine series
 * ATCvet code QG, Genito-urinary system and sex hormones, a section of the Anatomical Therapeutic Chemical Classification System for veterinary medicinal products
 * quod google (q.g.), an internet variation on Latin reference quod vide to indicate further information available

Other uses

 * Quetta Gladiators, a cricket team franchise in Pakistan Super League
 * Queen's Gambit, a chess opening move
 * Citilink, an IATA airline code