Gunnersbury Catholic School is a Roman Catholic secondary school for boys with specialist Science College status. It is situated in Brentford, London. The school was founded in 1932 by Fr William Roche.
In 1919, it opened as a Secondary School on Boston Park Road, Brentford. In 1932, it moved to Gunnersbury Avenue. Around 1938, extensions were made to the school after it received a bequeathal from Patrick Murphy who had died in 1934. In 1939, it received a grant and became a voluntary aided grammar school in 1944. In 1947, its junior school closed. In 1971, it became a comprehensive school. The lower school was on Gunnersbury Avenue and the upper school was moved to newly-constructed buildings on The Ride.
In 2019, the school's GCSE results were above average compared to the national and local authority figures. 69% of pupils achieved Grade 5 or above in English & maths GCSEs. Pupils' progress was "well above average" and the school's Attainment 8 score was also above average. The proportion of pupils entering the English Baccalaureate was higher than average.
As of 2023, the school's most recent Ofsted inspection was in Jan 2023 with the judgement of Outstanding.