GSD

GSD may refer to:

• Garsdale railway station, England, National Rail station code GSD
• Gender and Sexual Diversity, alternative terminology mooted for LGBT etc
• Geometric standard deviation, how spread out are a set of numbers whose preferred average is the geometric mean
• General Station Device, a file with the characteristics of an IO PROFINET Device
• German Shepherd Dog, a breed of large-sized dog that originated in Germany
• Gestational Sac Diameter
• Gibraltar Social Democrats
• Global Species Database, such as:
  • Algaebase
  • Global Invasive Species Information Network
• Glycogen storage disease
• Glycogen storage disease type II, or Pompe disease
• Glutathione synthetase deficiency
• Go Skateboarding Day
• Graphical system design
• Greenwich sidereal date
• Ground sample distance
• Harvard Graduate School of Design
• Mobile Suit Gundam SEED Destiny
• Georgia School for the Deaf
• Graphtec Vector Graphic Data, a file extension