Mount St Mary's College is an independent coeducational day and boarding school situated at Spinkhill, Derbyshire, near Sheffield, England. It was founded in 1842 as "The College of the Immaculate Conception at Spinkhill" by Fr Randal Lythgoe, the Provincial Superior of the Society of Jesus (better known as the Jesuits), and is still under the trusteeship of the Society.