The 1987 U.S. Women's Open Golf Championship was contested from July 23 to July 26 at Plainfield Country Club. It was the 42nd edition of the U.S. Women's Open.
This event was won by Laura Davies in a playoff over Ayako Okamoto and JoAnne Carner, 71-73-74.
| # | Player | Country | Score | To par | Money |
|---|---|---|---|---|---|
| 1 | Laura Davies | England | 72-70-72-71-71=285 | -3 | $55,000.00 |
| T2 | Ayako Okamoto | Japan | 71-72-70-72-73=285 | -3 | $23,823.50 |
| T2 | JoAnne Carner | United States | 74-70-72-69-74=285 | -3 | $23,823.50 |
| T4 | Betsy King | United States | 75-73-70-71=289 | +1 | $13,461.00 |
| T4 | Jody Anschutz | United States | 71-72-74-72=289 | +1 | $13,461.00 |
| T6 | Debbie Massey | United States | 76-69-74-71=290 | +2 | $9,741.00 |
| T6 | Deedee Lasker | United States | 74-73-69-74=290 | +2 | $9,741.00 |
| 8 | Martha Nause | United States | 76-69-70-76=291 | +3 | $8,390.00 |
| T9 | Kathy Postlewait | United States | 70-79-73-70=292 | +4 | $7,111.00 |
| T9 | Rosie Jones | United States | 75-71-71-75=292 | +4 | $7,111.00 |
| T9 | Sally Quinlan | United States | 75-71-71-75=292 | +4 | $7,111.00 |
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