An actor is a person who plays a role in theater, cinema or television.

Actor can also mean:

• Actants, also called actors, is, in actor-network theory (a general theory of sociological behaviour), the one who performs the act.
• In Interactions of Actors Theory excitations in any medium able to produce action- a theory of Cybernetics.
• In computing and artificial intelligence there are multiple usages:
  • Actor (UML), in requirements analysis and UML
  • Actor model, in concurrency, refers to a model of concurrent computation
• Actor (mythology), in Greek mythology, refers to a number of characters, including the father of Menoetius and Astyoche
• Actor (policy debate), the entity that enacts a certain policy action
• Actor (software), an early (circa 1990) object-oriented programming (OOP) integrated development environment (IDE) for the Windows operating system.
• ACTOR, or A Commitment To Our Roots, a charity now known as The Hero Initiative founded to help comic book creators in need
• Back actor, part of a digging machine.

Actress is the feminine form of "actor"; it can refer to:

• a woman who plays a role in theater, cinema or television
• the Catalan-language film "Actrius" (Actresses)

See also

• Dramatis personæ

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