QCD, or Quantum chromodynamics, is the theory of the strong interaction between quarks and gluons.

QCD may also refer to:

Business Quality, cost, delivery, in lean manufacturing Quality Custom Distribution, a subsidiary of Golden State Foods AGFiQ Enhanced Core Canadian Equity ETF (stock ticker: QCD); see List of Canadian exchange-traded funds

Other uses Qualified Charitable Distribution in US income tax law Quintessential Player, formerly known as Quintessential CD; a freeware media player quasi-circular depression, a type of geographic feature on Mars; see Geology of Mars Quad City Downs, East Moline, Illinois, USA; a horse race track Quad City DJ's, American hip hop group Quantum Cascade Detector, photodetector sensitive to infrared radiation

See also

KQCD, callsign QCD in region K WQCD (disambiguation), callsign QCD in region W