Gadfly

A gadfly is a fly that annoys horses and other livestock, usually a horse-fly or a botfly.

Gadfly can also refer to:

• Gadfly (social), a person who upsets the status quo
• A practitioner of gadfly ethics, one of the competing theories about how to pursue goodness
• Gadfly (database), a relational database in the Python programming language
• The Gadfly, a novel about revolution in Italy published in 1897 by Irish author Ethel Lilian Voynich
  • The Gadfly (1928 film), a Soviet film based on the novel, directed by Kote Marjanishvili
  • The Gadfly (1955 film), a Soviet film based on the novel, directed by Aleksandr Fajntsimmer
  • The Gadfly (1980 film), a Soviet film based on the novel, directed by Nikolai Mashchenko
  • The Gadfly (Zhukov opera), 1928 Russian opera by Mikhail Zhukov
  • The Gadfly (opera), 1958 a Russian opera by Soviet composer Antonio Spadavecchia
  • The Gadfly Suite, a musical suite by Dmitri Shostakovich for the 1955 film
• Gadfly (mythology), sent by Hera to torment Io in Greek mythology
• The Education Gadfly, the weekly e‑bulletin of the Thomas B. Fordham Institute
• Gadfly Online, an online and print magazine
• HMS Gadfly, four ships of the Royal Navy
• SA‑11 "Gadfly", the NATO reporting name for a Russian surface-to-air missile system "9K37 Buk"
• The Gadfly (album), an album by Christian hip-hop group LPG