The 1966 Women's Western Open was contested from August 18-21 at Rainbow Springs Country Club. It was the 37th edition of the Women's Western Open.
This event was won by Mickey Wright.
| # | Player | Country | Score | To par | Money ($) |
|---|---|---|---|---|---|
| 1 | Mickey Wright | United States | 72-78-76-76=302 | +2 | 1,500 |
| T2 | Margie Masters | Australia | 73-79-78-73=303 | +3 | 1,100 |
| Jo Ann Prentice | United States | 79-73-73-78=303 | |||
| 4 | Kathy Whitworth | United States | 74-79-74-77=304 | +4 | 800 |
| 5 | Mary Mills | United States | 75-78-77-77=307 | +7 | 675 |
| 6 | Judy Kimball | United States | 81-76-79-72=308 | +8 | 500 |
| 7 | Betsy Rawls | United States | 79-79-74-77=309 | +9 | 450 |
| 8 | Sybil Griffin | United States | 77-79-78-77=311 | +11 | 420 |
| 9 | Clifford Ann Creed | United States | 79-78-79-76=312 | +12 | 370 |
| T10 | Gloria Ehret | United States | 81-82-79-73=315 | +15 | 315 |
| Shirley Englehorn | United States | 79-80-82-74=315 |
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