Science

• Darcy's law, which describes the flow of a fluid through porous material
• The darcy, a unit of permeability of fluids in porous material
• the Darcy friction factor in the field of fluid mechanics
• Darcy-Weisbach equation used in hydraulics for calculation of the head loss due to friction

Names of people

• Les Darcy (1895–1917), Australian boxer
• Dame Darcy, American graphic artist, cartoonist, and musician
• Henry Darcy (1803–1858), a French scientist who made several important contributions to hydraulics and hydrogeology
• Robert Darcy, 4th Earl of Holderness (1718–1778), British diplomatist and politicianFirst names:
• Darcy Blake (born 1988), Welsh footballer
• Darcy Tucker (born 1975), a professional ice hockey player

Fictional names

• Mr. Fitzwilliam Darcy, from Jane Austen's novel Pride and Prejudice
• Lord Darcy (fiction), a detective, created by Randall Garrett
• Diane Darcy, race car driver
• Darcy Edwards, fictional student on Degrassi: The Next Generation
• Darcy (Winx club), a witch from animated series Winx Club

Other

• Darcy v. Allein, the first court case to result in a judgement against monopoly

See also

• D'arcy (disambiguation)
• Baron Darcy (disambiguation)