JFS (formerly known as the Jews' Free School and later Jewish Free School) is a Jewish mixed comprehensive school in Kenton, North London, England, and was founded in 1732. Amongst its early supporters was the writer and philanthropist Charlotte Montefiore. At one time it was the largest Jewish school in the world, with more than 4,000 pupils.

The school moved from Camden Town to a new site in Kenton in 2002 to represent the demand of London's Jewish population moving further out towards the suburbs. The school is within the jurisdiction of the London Borough of Brent, while its postal town is Harrow.

JFS operates the house system and has four houses for organisational purposes. Students must wear a tie with stripes in their house colour.

Both Brodetsky and Zangwill were former students, Angel was a previous and long-serving headmaster and Weizmann, who has several links to the school, was the first President of the State of Israel.

Students are split into their respective houses for most classes in Years 7, 8 and 9 as well as inter-house competitions, such as football and basketball.

A tradition called "muck-up day" involves Year 11 students celebrating the last day of formal schooling before their GCSE examinations with various pranks. In May 2015 this descended into "a near-riot", with more than 300 pupils barred from the campus after a small minority spread foam, eggs, flour and dead chickens around the school. The police were called after some students broke through a security fence and let off fireworks, but no arrests were made.

In 2007, 53% of the school's attempted GCSE exams received grades of A* or A. In 2012 JFS was at the top of the School League Tables for GCSE in Brent and its A-Level results were the best of all the mainstream Jewish schools.

In 2024 at GCSE level, 95% of students have passed both English and Mathematics, and 48% of all grades were a ‘Grade 7’ or above. 30% of all grades were a ‘Grade 8’ or above.