The 1987 U.S. Women's Open was the 42nd U.S. Women's Open, held July 23–28 at Plainfield Country Club in Edison, New Jersey, a suburb southwest of New York City.

Laura Davies won the first of her four major titles in an 18-hole Tuesday playoff over runners-up Ayako Okamoto and Joanne Carner.

The final round concluded on Monday after rain delays.

It was Davies' first victory in the United States,[2][3] and she became the fourth international winner of the championship.

[4] Following this year, the Women's Open was not played in the New York City area for over a quarter century, returning in 2013 at Sebonack on eastern Long Island.