St Margaret's School (Hampstead) is a private girls' school in Hampstead, North London.

The school has 150 girls (ages 4 to 16) and 24 teachers.

The first mention of "St Margaret’s" is in 1898, when a newspaper advertisement appeared, announcing that Elizabeth Isabella Tulloch would be moving the school to "St Margaret’s, Oak Hill Park."

In 1928 Hilda Jean Copinger took over on Tulloch's retirement, with co-principal Margaret Macrae overseeing the academic side.

Since 1954 the school has one main building and two outside classrooms in Kidderpore Gardens in the residential part of Hampstead.