The 1915 U.S. Open was the 21st U.S. Open, held June 17–18 at Baltusrol Golf Club in Springfield, New Jersey, west of New York City. Four-time U.S. Amateur champion Jerome Travers captured his only U.S. Open title, one stroke ahead of runner-up Tom McNamara. The championship was played on the original course at Baltusrol, now known as the Old Course, which no longer exists.

The Baltusrol Golf Club is a private 36-hole golf club in the eastern United States, located in Springfield, New Jersey, about twenty miles (30 km) west of New York City. It was founded 129 years ago in 1895 by Louis Keller.