Pi (disambiguation)

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Pi or π is a mathematical constant equal to a circle's circumference divided by its diameter.

Pi, π or Π may also refer to:


  • Pi (state), an ancient state during China's Zhou dynasty
  • Pi, Catalonia, an integrated village of Bellver de Cerdanya, Catalonia, Spain
  • Pi County, Sichuan province, China
  • Pi Islands, Palmer Archipelago, Antarctica


Given name[edit]

  • Pi de Bruijn (born 1942), Dutch architect
  • Pi O or П. O. (born 1951), Greek-Australian anarchist poet
  • Pi Schwert (1892–1941), American baseball player and politician
  • Pi Vèriss, Dutch songwriter and composer


Arts, entertainment, and media[edit]

Fictional characters[edit]


Other arts, entertainment, and media[edit]

Science and mathematics[edit]

Chemistry and biochemistry[edit]

Logic and computer science[edit]



  • Pion or π, a subatomic particle

Other uses[edit]

See also[edit]