Influence might refer to:

Science and technology

Politics

  • Undue influence, in contract law, where one person takes advantage of a position of power over another person
  • Sphere of influence, in political science, an area over which a state or organisation has a few indirect control
  • Agent of influence, an agent of a few stature who uses their position to influence public opinion or decision making to produce results beneficial to the country whose intelligence service operates the agent
  • Office of Strategic Influence, a short-lived U.S. government department

Arts and entertainment

Other uses