The term Don may refer to:

• Don (honorific) (also Dom), a Spanish, Portuguese and Italian title, given as a mark of respect
  • Similar usage is found in Sri Lankan culture referring to persons of Portuguese descent
  • Don, the term used for a crime or Mafia leader
• Don, Nord, a commune of the Nord département in northern France
• Don (TN), a commune in the province of Trento, in northern Italy
• Dôn, a mother goddess in Welsh mythology
• In English universities, traditionally, a head, fellow or tutor of a college (see also Superdon)
• DON, in pharmacology, the psychedelic phenethylamine 2,5-dimethoxy-4-nitroamphetamine
• DON, in microbiology: De-Oxy-Nivalenol, = Vomitoxin, a toxine produced by several Fusarium and Aspergillus strains
• An Ashkenazi variant transliteration of the Israelite Tribe of Dan
• DON, an acronymn for the United States Department of the Navy
• DON Smallgoods, an Australian smallgoods company with the gutterally pronounced slogan "Iz Don. Iz Good."
• An abbreviated/diminutive form of the Western male name Donald

Rivers

• Don River, Russia, one of the main rivers of Russia
• River Don, Aberdeenshire, in Scotland
• River Don, England, in South Yorkshire
• Don River (Toronto), in Canada

Movies

• Don (1978 film), a blockbuster Hindi movie starring Amitabh Bachchan
• Don (2006 film), a Bollywood remake starring Shahrukh Khan
• Don (Dutch film) a 2006 Dutch film

TV Series

• DON, a TV series aired on Star One and the nickname and initials of the protagonist's name: Detective Omkar Nath

Play

• Don (play), a play at the New Theatre in New York City, circa 1910

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