title: XG
text: # XG
  
  XG or xG may refer to:
  
  ## Organizations
  
  * XG Technology, a wireless communications company
  * SunExpress Deutschland (IATA code XG, 2011-2020), a German leisure airline headquartered in Frankfurt, Germany
  * Clickair (IATA code XG, 2006-2009), a former low-cost airline based in Spain
  
  ## 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
  