Osborne Ladies' College was an Australian girls school located in Blackheath, New South Wales from 1923 until 1958.

In 1923 Gibbins moved her school to its final location on 40 acres (160,000 m2) near Blackhheath overlooking the Kanimbla and Megalong Valleys.

The school uniform was in naval blue worn with Royal Navy buttons.

An emphasis was placed on physical fitness, spartan living (only one room was heated at the school, the library), archery, shooting, sports, and dramatic arts.

Memorabilia from Osborne Ladies' College is on display in the Mount Victoria museum.