Transaction or transactional may refer to:

• Financial transaction, an agreement, communication, or movement carried out between a buyer and a seller to exchange an asset for payment
• Debits and credits in a Double-entry bookkeeping system
• Electronic funds transfer, the electronic exchange or transfer of money from one account to another
• Real estate transaction, the process whereby rights in a unit of property is transferred between two or more parties
• Transaction cost, a cost incurred in making an economic exchange
• Transactional law, the practice of law concerning business and commerce

• Transaction processing, information processing that is divided into individual, indivisible operations
• Database transaction, a unit of work performed within a database management system
• Atomic transaction, a series of database operations such that either all occur, or nothing occurs

• Transactions, the published proceedings of a learned society:
  • All pages with titles beginning with Transactions of
• Transaction Publishers, a New Jersey–based publishing house that specializes in social sciences books
• "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
• Transactional leadership, a leadership style described by James MacGregor Burns

• All pages with titles containing Transaction