YD

YD, Y.D., or Yd may refer to:

  • YD, the ISO 3166-1 two-letter code for South Yemen
  • Yd., an abbreviation for the unit of length Yard
  • Square yard (Yd²)
  • Cubic yard (Yd³)
  • Nissan YD engine
  • USS YD-43, later name for USS Captain Dud (ID-3507)
  • Yarmouth–Dennis Red Sox, or Y-D Red Sox