Exeter Cathedral School (ECS) is a 3–13 mixed, Church of England, private day and boarding choir and preparatory school in Exeter, Devon, England. It has been closely associated with Exeter Cathedral since it was first recorded as existing in the 12th century.

Exeter Cathedral, properly known as the Cathedral Church of Saint Peter in Exeter, is an Anglican cathedral, and the seat of the Bishop of Exeter, in the city of Exeter, Devon, in South West England. The present building was complete by about 1400 and has several notable features, including an early set of misericords, an astronomical clock and the longest uninterrupted medieval stone vaulted ceiling in the world.