Westcliff High School for Boys (WHSB) is an 11–18 selective boys academy grammar school in Westcliff-on-Sea, Essex, England. In September 2001 the school was awarded ‘Beacon’ status for its breadth of achievements and quality of work. The school was classed as a humanities college in early 2007 and received a further specialism in science, technology, engineering and mathematics (STEM) on 1 April 2009. The school converted to academy status in 2010.

Westcliff-on-Sea is a suburb of the city of Southend-on-Sea, located within the ceremonial county of Essex, England. It is on the north shore of the lower Thames Estuary, about 34 miles (55 km) east of London. The Westcliff-on-Sea area is described by Southend-on-Sea City Council as having a border in the east with Milton Road, Hamlet Court Road and Gainsborough Drive; Prittlewell Chase to the North and Valkyrie Road/ London Road/ Southbourne Grove in the west. Traditionally Westcliff included Chalkwell.