1965 U.S. Open (golf)

The 1965 U.S. Open was the 65th U.S. Open, held June 17–21 at Bellerive Country Club in Town and Country, Missouri, a suburb west of St. Louis. Gary Player of South Africa defeated Kel Nagle of Australia in an 18-hole playoff to win his only U.S. Open title. Player was the first foreign-born winner of the U.S. Open since 1927, and the win completed his career Grand Slam at age 29. It was the fourth of his nine major titles. The 1965 U.S. Open was the first U.S. Open broadcast on color television.

The five-year-old course at Bellerive was the U.S. Open's longest to date at 7,191 yards (6,575 m), and had the potential to reach 7,500 yards (6,860 m). The quality of the young course's turf varied, with burned out or diseased areas which the USGA did not allow relief from. The field consisted of 136 professionals and 14 amateurs, with the top fifty and ties advancing after 36 holes. This was the first time that the U.S. Open was scheduled for four days, with the final round on Sunday. Previously the third and fourth rounds were both played on Saturday. The U.S. Women's Open also changed to this format, held two weeks later in early July.