Waterloo Women's Open Invitational

The Waterloo Women's Open Invitational was a golf tournament on the LPGA Tour from 1958 to 1966. It was played at the Sunnyside Country Club in Waterloo, Iowa.

Winners

 * 1966 Carol Mann
 * 1965 Betsy Rawls
 * 1964 Shirley Englehorn
 * 1963 Mickey Wright
 * 1962 Marilynn Smith
 * 1961 Mickey Wright
 * 1960 Wiffi Smith
 * 1959 Betsy Rawls
 * 1958 Fay Crocker