The 1964 U.S. Women's Open Golf Championship was contested from July 8 to July 11 at San Diego Country Club. It was the 19th edition of the U.S. Women's Open.
This event was won by Mickey Wright in a playoff 70 to 72 over Ruth Jessen.
| # | Player | Country | Score | To par | Money |
|---|---|---|---|---|---|
| 1 | Mickey Wright | United States | 71-71-75-73=290 | -2 | $2,200.00 |
| 2 | Ruth Jessen | United States | 72-73-74-71=290 | -2 | $1,320.00 |
| T3 | Marilynn Smith | United States | 75-70-72-74=291 | -1 | $757.50 |
| T3 | Shirley Englehorn | United States | 71-78-68-74=291 | -1 | $757.50 |
| 5 | Sandra Haynie | United States | 78-73-70-74=295 | +3 | $550.00 |
| 6 | Peggy Wilson | United States | 73-77-72-74=296 | +4 | $440.00 |
| T7 | Jo Ann Prentice | United States | 78-73-76-71=298 | +6 | $371.25 |
| T7 | Marlene Hagge | United States | 71-76-74-77=298 | +6 | $371.25 |
| 9 | Kathy Whitworth | United States | 76-76-75-73=300 | +8 | $330.00 |
| 10 | Patty Berg | United States | 76-74-77-75=302 | +10 | $302.50 |
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