The 1958 Women's Western Open was contested from June 19-22 at Kahkwa Country Club. It was the 29th edition of the Women's Western Open.
This event was won by Patty Berg.
| # | Player | Country | Score | To par | Money ($) |
|---|---|---|---|---|---|
| 1 | Patty Berg | United States | 75-72-71-75=293 | +1 | 950 |
| 2 | Beverly Hanson | United States | 72-76-75-74=297 | +5 | 652 |
| 3 | Louise Suggs | United States | 76-75-75-73=299 | +7 | 559 |
| T4 | Mary Lena Faulk | United States | 80-77-70-74=301 | +9 | 431 |
| Mickey Wright | United States | 78-73-72-78=301 | |||
| 6 | Wiffi Smith | United States | 73-77-74-79=303 | +11 | 326 |
| 7 | Marilynn Smith | United States | 80-74-79-73=306 | +14 | 289 |
| T8 | Kathy Cornelius | United States | 76-74-79-78=307 | +15 | 210 |
| Jackie Pung | United States | 73-77-78-79=309 | |||
| T10 | Marlene Bauer Hagge | United States | 71-82-76-79=308 | +16 | 140 |
| Jo Ann Prentice | United States | 76-77-79-76=308 | |||
| Joyce Ziske | United States | 79-79-73-77=308 |
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