Monopoly is a board game published by Parker Brothers, a subsidiary of Hasbro. The game is named after the economic concept of monopoly, the domination of a market by a single entity.

Monopoly is the most commercially-successful board game in United States history, with 485 million players worldwide.

According to Hasbro, since Charles Darrow patented the game in 1935, approximately 750 million people have played the game, making it "the most played (commercial) board game in the world." The 1999 Guinness Book of Records cited Hasbro's previous statistic of 500 million people having played Monopoly. Games Magazine has inducted Monopoly into its Hall of Fame. The mascot for the game is a monocle-wearing man, wearing morning dress, named Mr. Monopoly.