Integration may be any of the following:

• Integration, in the most general sense, may be any bringing together and uniting of things: the integration of two or more economies, cultures, religions (usually called syncretism), etc.
• Integration, in mathematics, a concept of calculus, is the act of finding integrals
• Indefinite integration, in mathematics, refers to antidifferentiation
• Racial integration, refers to social and cultural behavior
• Economic integration
• Regional integration
• Horizontal integration and vertical integration, in microeconomics and strategic management, refer to a style of ownership and control
• Integration clause, in a contract, a term used to declare the contract the final and complete understanding of the parties
• In computer science
  • Digital integration, in computer science, allows data from one device or software to be read or manipulated by another, resulting in ease of use
  • Enterprise application integration, as the use of software and computer systems to bring together a set of enterprise computer applications
• Systems Integration, refers to the discipline of designing systems by means of glueing together otherwise separate parts. Usually associated to the construction of complex systems.