Mount St Benedict College is an independent Roman Catholic single-sex secondary day school for girls, located in Pennant Hills, a suburb on the Upper North Shore of Sydney, New South Wales, Australia.

Mount St Benedict College commenced on 1 February 1966 with 65 students under the guidance of Sisters Christopher Burrows and Hyacinth Roche.

The students receive formal religious education and are also encouraged to participate in a wide range of activities which seek to broaden their understanding of, and commitment to, the faith life of the Church and its service to the broader community.

[1] In 1987, in line with other Good Samaritan Schools, Mount St Benedict College was incorporated as a Company with a board of directors.

Mount St Benedict College offers students the opportunity to participate in sport at a representative level as well as in co-curricular teams.