Convention may refer to:

• Convention (norm), a custom or tradition, a standard of presentation or conduct
  • Treaty, an agreement in international law
  • Convention (political norm), uncodified legal or political tradition
• Convention (meeting), meeting of a (usually large) group of individuals and/or companies in a certain field who share a common interest
  • Fan convention, a gathering of fans of a particular media property or genre
    • Anime convention, centered on Japanese anime and manga
    • Comic book convention centered on comic books
    • Gaming convention, centered on role-playing games, collectible card games, miniatures wargames, board games, video games, and the like
    • Tattoo convention, a meeting and exhibition for tattoo practitioners and enthusiasts from different shops and areas, as well as anyone who wishes to see the world of tattooing up close
    • Furry convention, centered on anthropomorphic animals; fictional non-human animal creatures with human characteristics
  • Political convention, a formal gathering of people for political purposes
• Trade fair
• Bridge convention, a term in the game of bridge
• Convention (Paris Métro), a station on line 12 of the Paris Métro in the 15th arrondissement
• "The Convention" (The Office episode)
• "Convention" (Malcolm in the Middle episode)

• Conference
• National Convention (disambiguation)