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OP may refer to:

Arts and entertainment[edit]

  • One Piece, a 1997 Japanese manga and anime
  • Opposite prompt, a stage right prompt corner on a theatre stage
  • Optimus Prime, a character from the Transformers franchise
  • Op., short for opus number, used to denote one work of musical composition from many
  • Original Pronunciation, a term used by linguist David Crystal to describe the accent originally used in Shakespeare's works
  • Out of print, a status of a book title at a publishing house

Businesses and organizations[edit]


  • Original post or original poster, the first post in or person initiating a new Internet thread
  • Overpowered, in video games, when a particular aspect or character is lacking game balance



Other uses[edit]

See also[edit]