The 1946 U.S. Women's Open was a golf tournament contested from August 26 to September 1 at Spokane Country Club, north of Spokane, Washington. It was the first edition of the U.S. Women's Open, and only one to have been played in match play competition. The field of 39 women was reduced to the 32-player match play field by a 36-hole qualifier on Monday and Tuesday. Six professionals and 26 amateurs advanced to match play. The format was 18-hole matches through the quarterfinals, and 36 holes for the semifinals and finals.