Sir Henry Floyd Grammar School (SHFGS) is an 11–18 mixed sex, grammar school and sixth form with academy status in Aylesbury, Buckinghamshire, England.

As a selective school, its entry requirements are governed by the exam taken by students entering Year 7.

The original school was built in Walton Road Aylesbury and remained there until the early 1960s.

When it moved to its current site on Oxford Road in 1963,[3] the name was changed to Aylesbury Technical High School.

The houses are:[4] The school has a performing arts building, complete with theatre, music practice rooms and a recording studio.