The 1958 Women's Western Open was contested from June 19–22 at Kahkwa Country Club located in Erie, Pennsylvania. It was the 29th edition of the Women's Western Open.

This event was won by Patty Berg.

Place	Player	Score	To par	Money ($)
1	Patty Berg	75-72-71-75=293	+1	950
2	Beverly Hanson	72-76-75-74=297	+5	652
3	Louise Suggs	76-75-75-73=299	+7	559
T4	Mary Lena Faulk	80-77-70-74=301	+9	431
	Mickey Wright	78-73-72-78=301
6	Wiffi Smith	73-77-74-79=303	+11	326
7	Marilynn Smith	80-74-79-73=306	+14	289
T8	Kathy Cornelius	76-74-79-78=307	+15	210
	Jackie Pung	73-77-78-79=309
T10	Marlene Bauer Hagge	71-82-76-79=308	+16	140
	Jo Ann Prentice	76-77-79-76=308
	Joyce Ziske	79-79-73-77=308

• Pittsburgh Post-Gazette source