Darcy, Darci or Darcey may refer to:
Science
- Darcy's law, which describes the flow of a fluid through porous material
- Darcy (unit), a unit of permeability of fluids in porous material
- Darcy friction factor in the field of fluid mechanics
- Darcy–Weisbach equation used in hydraulics for calculation of the head loss due to friction
People
- Darcy (surname), a surname (including a list of people with the name)
Men
- Darcy Blake (born 1988), Welsh footballer
- Darcy Dallas (born 1972), Canadian ice hockey defenceman
- Darcy Daniher (born 1989), Australian rules footballer
- Darcy Furber, Canadian politician
- Darcy Gardiner (born 1995), Australian rules footballer
- Darcy Hordichuk (born 1980), professional ice hockey player
- Darcy Kuemper (born 1990), professional ice hockey player
- Darcy Lang (born 1995), Australian rules footballer
- Darcy Lear (1898–1967), Australian rules footballer
- Darcy Lussick (born 1989), Australian rugby league player
- Darcy McDougall (1886–1952), Australian rules footballer
- Darci Miguel Monteiro (1968-2018), Brazilian footballer
- Darcy Ribeiro, (1922–1997), Brazilian anthropologist and politician
- Darcy Tucker (born 1975), professional ice hockey player
Women
- Darcey Bussell (born 1969), English ballerina
- Darci Lynne (born 2004), American singing ventriloquist
- Darci Kistler (born 1964), American ballet dancer
- Darcy LaPier (born 1965), American actress
- Darcy Sterling (born 1969), American actress
Fictional characters
- Mr. Darcy, from Jane Austen's novel Pride and Prejudice
- Mark Darcy, from Helen Fielding's novel Bridget Jones's Diary
- Lord Darcy (character), a detective created by Randall Garrett
- Diane Darcy, racing car driver, in Herbie Goes to Monte Carlo
- Darcy Edwards, student on Degrassi: The Next Generation
- Darcy (Winx club), a witch from animated series Winx Club
- Darcy Doll, an android companion created by the Toyman in Superman: The Animated Series
- Darcy Hudson, a character in the Australian drama series A Country Practice
Other uses
- Darcy v. Allein, the first court case to result in a judgement against monopoly
- Darci, a doll in the Groovy Girls line
See also
- D'arcy (disambiguation)
- Darcie, a feminine given name
- Baron Darcy (disambiguation)
- All pages with titles beginning with Darcy