Quack

Quack, The Quack or Quacks may refer to:

• Quack Davis, American baseball player
• Hendrick Peter Godfried Quack (1834–1917), Dutch economist and historian
• Joachim Friedrich Quack (born 1966), German Egyptologist
• Johannes Quack (born 1959), German ethnologist
• Martin Quack (born 1948), German physical chemist
• Niels Quack (born 1980), Swiss and German engineer
• Sigrid Quack (born 1958), German social scientist

• Quacks (TV series), a British comedy series about quackery
• The Quack (), a 1982 Polish drama film
• Znachor (1937 film), a Polish drama film
• O. K. Quack, a character in the Scrooge McDuck universe
• Quack, a duck in Peep and the Big Wide World, a children's TV series
• Quack, a character in Zack & Quack, an animated television series

• KWAX, a classical FM radio service of the University of Oregon
• Quack (album), an album by the American-Canadian group Duck Sauce
• The Quack (EP), a 2013 album by Australian electronic music project What So Not

• Quack (horse) (1969–1995), an American Thoroughbred racehorse
• The Quack (horse), a 19th-century Australian Thoroughbred racehorse
• The Quacks of Quedlinburg, a bag-building, push-your-luck board game, affectionately known as "Quacks" for short, designed by Wolfgang Warsch.
• Quack, a portmanteau of queen and jack; see Glossary of contract bridge terms § Q

• Quack (medicine), a person who practices quackery, the promotion of unproven or fraudulent medical practices
• Quack (sound), onomatopoeia for the sound made by ducks
• Quack grass ( Elymus repens), a species of grass
• Quack.com, a company based in Silicon Valley