A transaction is an agreement, communication, or movement carried out between separate entities or objects, often involving the exchange of items of value, such as information, goods, services and money.

• Financial transaction
• Database transaction
• Atomic database transaction
• Transaction processing
• POS Transaction

Transaction may also refer to:

• Transaction Publishers
• “Transaction,” an episode of the Death Note anime series, see List of Death Note episodes
• Transactional analysis, a psychoanalytic theory of psychology
• Transactional interpretation, an interpretation of quantum mechanics.