The 1913 U.S. Open was the 19th U.S. Open, held September 18–20 at The Country Club in Brookline, Massachusetts, a suburb southwest of Boston. Amateur Francis Ouimet, age 20, won his only U.S. Open title in an 18-hole playoff, five strokes ahead of Britons Harry Vardon and Ted Ray.

The Country Club, located in Brookline, Massachusetts, is the oldest golf-oriented country club in the United States. It holds an important place in golf history, as it is one of the five charter clubs that founded the United States Golf Association, and has hosted numerous USGA tournaments including the 1913 U.S. Open won by then-unknown Francis Ouimet. Although the club has 1300 members, it is known for its exclusivity.