The Mary Erskine School

The Mary Erskine School, popularly known as "Mary Erskine's", is an all-girls independent secondary school in Edinburgh, Scotland. It has a roll of around 700 pupils. It is the sister school of Stewart's Melville College and they share a coeducational junior school for pupils aged 3–11.

The school was founded as a hospital school in 1694 as the Merchant Maiden Hospital by Mary Erskine and the Company of Merchants of the City of Edinburgh. In 1870, it was refounded as a day school and renamed as the Edinburgh Educational Institution For Girls. The school was renamed again to Edinburgh Ladies' College in 1889, and to its present name, the Mary Erskine School, in 1944.

The majority of its pupils live in the surrounding area (Edinburgh, Lothian and Fife) but boarding facilities are available. The school can cope with up to 40 boarders, including boys from Stewarts Melville College. The school is non-denominational but claims to have a broadly Christian outlook.

The school is linked with Stewart's Melville College (SMC) – an all-boys independent secondary school which is located approximately one mile (2 km) from the MES campus. Together MES and SMC have a co-educational Junior School which caters for pupils from three to 11 years old. The Junior School is split between the MES campus and the SMC campus. There is also a nursery school which feeds into the Junior School. Both MES and SMC are managed by the Merchant Company of Edinburgh which is also responsible for the city's George Watson's College.

Although the school is single sex, many activities, although not teaching, are carried out jointly with the boys from SMC. The sixth form of the school is largely co-educational.