St Mary's School, Waverly is a private English medium, Anglican and boarding school for girls. It is situated in the suburb of Waverley in Johannesburg in the Gauteng province of South Africa, it is one of the top and most academic schools in Gauteng.
Established in 1888, it is the oldest school in Johannesburg. It was founded by the Anglican clergyman the Rev. John T. Darragh, who also founded its brother school St John's College, Johannesburg in Houghton ten years later in 1898.
St Mary's School writes the Independent Examinations Board exams.
As of December 2023, the headmistress at St Mary's was Deanne King. In January 2025, the school introduced a no-cellphone policy during school hours.
Alumnae and Old Girls
Cindy Brown (hockey)
Lisa-Marie Deetlefs (hockey)
Lilian du Plessis (hockey)
Natalie Grainger (squash)
Claire Nitch (squash)
Lize-Mari Retief (swimming)
Ashley Callie
Prue Leith
Lerato Mbele
Mogau Motlhatswi
Carolyn Slaughter
Jane Dutton
Helen Zille
Alison Lewis
Shelley Russell
Hannah Pearce