XG

XG or xG may refer to:

Organizations

 * XG Technology, a wireless communications company
 * Clickair (former IATA code: XG), a 2006–2009 Spanish low-cost airline
 * SunExpress Deutschland (former IATA code: XG), a 2011–2020 German leisure airline

Science and technology

 * Xg antigen system, a red blood cell surface antigen system
 * DARPA XG, a DARPA communication program
 * Hyundai XG, a Hyundai car model
 * Yamaha XG, a Yamaha extension to the General MIDI standard

Other uses

 * XG (group), a Japanese girl group
 * Extreme-G, a video game
 * Expected goals (xG), a performance metric used to evaluate football team and player performance