Harris Academy St John's Wood is a secondary school in St John's Wood, North London, that was re-named in 2017. It is a 7 form-entry non-selective co-educational academy. Its predecessor Quintin Kynaston was founded in 1969 by the merger of Quintin Grammar School and Kynaston School. The earlier schools, which were built on the same site, opened in September 1956. It has been an academy school since November 2011. The school was rated as "Outstanding" in 2008 and 2011 by Ofsted, the English schools' inspectorate; however, in 2014 it was rated "Requires Improvement", and in April 2017 it was rated "Inadequate" and as a consequence was placed in special measures. It joined the Harris Federation Multi-Academy Trust in September 2017. In 2019, Ofsted ranked the Academy as 'good'.

St John's Wood is a district in the City of Westminster, London, England, about 2.5 miles (4 km) northwest of Charing Cross. Historically the northern part of the ancient parish and Metropolitan Borough of Marylebone, it extends from Regent's Park and Primrose Hill in the east to Edgware Road in the west, with the Swiss Cottage area of Hampstead to the north and Lisson Grove to the south.