St. Michael's School, established in 1874 by the Community of St Michael and All Angels, is a public school with a boarding option for girls located in Bloemfontein, Free State, South Africa.

St Michael's is the oldest girls' school North of the Orange River.

[1]: 37  It was founded by Bishop Webb in 1874, and in the same year, the first Mother Superior, Sister Emma, and five volunteers arrived in Bloemfontein to become the Community of Saint Michael and All Angels.

The school was originally built on the western boundary of Bloemfontein, where the Sand du Plessis Theatre now stands, in Markgraaff Street.

Mother Mary Ruth and the sisters retired from their administrative, academic and hostel duties in the school.