The US Open Tennis Championships, commonly called the US Open, is a hardcourt tennis tournament organized by the United States Tennis Association annually in Queens, New York City. It is chronologically the fourth and final of the four Grand Slam tennis events, held after the Australian Open, French Open, and Wimbledon.

The US Open starts on the last Monday of August and continues for two weeks, with the middle weekend coinciding with the United States Labor Day holiday. All players participating must be at least fourteen years old. Since the start of the Open Era of tennis in 1968, the event has been open to both amateur and professional players.