St Mary's Catholic Primary School, Isleworth is a primary school based in Isleworth under the Hounslow local authority.

St Mary's Catholic Primary School, Isleworth caters for mixed pupils from 3 to 11 years. With 393 pupils enrolled and a capacity of 420, the school provides a structured and balanced curriculum aligned with national expectations.

Ofsted last inspected the school on 28 June 2022, awarding it a Outstanding rating. The report noted positive aspects of leadership, safeguarding and the school’s approach to pupil development.