YD, or Yd may refer to:
*
Yard (yd), a unit of length
*
Nissan YD engine, an automobile engine
* USS ''YD-43'', later name for
*
Yarmouth–Dennis Red Sox, or Y-D Red Sox, a collegiate summer baseball team based in South Yarmouth, Massachusetts
*
Younger Dryas, a geological period from c. 12,900 to c. 11,700 calendar years ago
*
South Yemen
South Yemen ( ar, اليمن الجنوبي, al-Yaman al-Janubiyy), officially the People's Democratic Republic of Yemen (, ), also referred to as Democratic Yemen (, ) or Yemen (Aden) (, ), was a communist state that existed from 1967 to 19 ...
(ISO 3166-1 code YD)
* YD-# Yard
Derrick, a
Crane vessel
* YD - Young Diem / Early Day
*
Yd. (retailer), an Australia and New Zealand clothing retail chain
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