The Diocesan School for Girls or DSG is a private boarding school for girls, situated in Makhanda (Grahamstown) in the Eastern Cape province of South Africa.

It is one of the most expensive private girls' schools in South Africa.

Most girls enter the school in grade 4, coming from St. Andrew's Preparatory School.

From grade 10 all the academic classes are shared with St. Andrew's College and are thus co-instructional.

The DR Wynne Music School,[2] and a design and technology centre are shared with St. Andrew's College.