The City of London School, also known as CLS and City, is a private day school for boys in the City of London, England, on the banks of the River Thames next to the Millennium Bridge, opposite Tate Modern. It is a partner school of the City of London School for Girls and the City of London Freemen's School. All three schools receive funding from the City's Cash. It is a member of the Headmasters' and Headmistresses' Conference (HMC). It is one of the most academically selective and successful schools in the country.

Peter Ware Higgs was a British theoretical physicist, professor at the University of Edinburgh, and Nobel laureate in Physics for his work on the mass of subatomic particles.