operation

• Operation (game), a battery-operated board game that challenges dexterity
• Operation (music), a term used in musical set theory
• Operations (magazine), Multi-Man Publishing's house organ for articles and discussion about its wargaming products
• The Operation (film), a 1973 British television film
• The Operation (1990), a crime, drama, TV movie starring Joe Penny, Lisa Hartman, and Jason Beghe
• The Operation M.D., formerly The Operation, a Canadian garage rock band
• "Operation", a song by Relient K from The Creepy EP, 2001

• "The Operation", Sky Dancers episode 27 (1996)
• "The Operation", The Golden Girls season 1, episode 18 (1986)
• "The Operation", You're Only Young Twice (1997) series 2, episode 8 (1978)

• The Operation (1992–1998), a reality television series from TLC

• Manufacturing operations, operation of a facility
• Operations management, an area of management concerned with designing and controlling the process of production

• Military operation, a military action (usually in a military campaign) using deployed forces
• Black operation, or "Black op", an operation that may be outside of standard military protocol or against the law
• Clandestine operation, an intelligence or military operation carried out so that the operation goes unnoticed
• Combined operations, operations by forces of two or more allied nations
• Covert operation, an operation which conceals the identity of the sponsor
• Psychological operations, an operation consisting of psychological manipulations, tactics, and warfare
• Special operations, military operations that are unconventional
• Operations (J3), third level of Nation Level Command Structure
• Operations (military staff), staff involved in planning operations
• Sting operation, an operation designed to catch a person committing a crime, by means of deception

• Inference, a step in reasoning
• Information technology operations
• Operation (mathematics), a calculation from zero or more input values (called operands) to an output value
• Arity, number of arguments or operands that the function takes
• Binary operation, calculation that combines two elements of the set to produce another element of the set
• Graph operations, produce new graphs from initial ones
• Modulo operation, operation finds the remainder after division of one number by another
• Operations research, in British usage, application of advanced analytical methods to make better decisions
• Unary operation, an operation with only one operand
• Rail transport operations, the control of a rail system
• Scientific operation
• Surgical operation, or surgery, in medicine
• Unit operation, a basic step in a chemical engineering process

• Anomalous operation, in parapsychology, a term describing a broad category of purported paranormal effects
• Operation, a word which represents a grammatical relation (i.e., function) or instruction, rather than a term or name
• Operation of law, a legal term that indicates that a right or liability has been created for a party

• List of military operations
• OP (disambiguation)
• Operations support system, used in the telecommunications industry
• Operations room, the tactical center providing processed information for command and control of an area of operations
• Operative (disambiguation)
• Operator (disambiguation)

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