St Martin-in-the-Fields High School for Girls was one of the oldest schools for girls in Britain. It was established in 1699 as a charitable enterprise by the parish of St Martin-in-the-Fields. Its popularity and growth led to its relocation in 1928 on a larger site in Tulse Hill, in the South London borough of Lambeth, England. For most of its history it was a grammar school, but at its closure in 2024 it was a secondary school with academy status.

The school badge depicts the eponymous St. Martin of Tours. The school motto, Caritate et disciplina translates as "With Love and Learning". The school remained Christian but accepted girls of all faiths.

Following the school's closure because of declining enrolment, it was announced that the building would become a youth hub called Oasis St Martin's Village.