Dunstable Grammar School was in the north end of the market town of Dunstable, Bedfordshire, England. It existed from 1888 to 1971, when it formally ended. After that date the remaining teachers and pupils moved to a new building (at the opposite end of the town) and started the Manshead School under the new Comprehensive Education system. The original Grammar School building was modernised and it became the Ashton Middle School, from 1973, for children aged 9-12 years. Location within the British Isles Dunstable is a town in the county of Bedfordshire, with a population of 33,805 (2001 census). ...

Dunstable Grammar School was founded by a group of Trustees for the Almshouse Charity created by the Will of Frances Ashton. Hence the inscription on the building which says:

'Dunstable Grammar School Founded A.D. 1728 By Mrs. Frances Ashton Built A.D. 1887.'

Ex-pupils include:

Gary Cooper, (known as Frank Cooper while at school) who became an actor and starred in many Hollywood films, e.g. as the town Marshall in High Noon (1952). Gary Cooper and Eleanor Roosevelt, in 1950 Gary Cooper (May 7, 1901 – May 13, 1961) was a two-time Oscar-winning American film actor of British heritage, whose career spanned from the 1920s up until the year of his death. ... ...

Khawaja Nazimuddin, (known as Khaja Nazimuddin while at school) who became the second Prime Minister of Pakistan (October 17, 1951 - April 17, 1953). (The first Prime Minister of Pakistan, Liaquat Ali Khan was assassinated in 1951.) Khawaja visited his old school dormitory in 1952. Khawaja Nazimuddin Khawaja Nazimuddin (Urdu: خواجہ ناظم الدین) (Bengali: খাজা নাজিমুদ্দীন)(July 19, 1894 - 1964) was the second Governor-General of Pakistan, and later the second Prime Minister of Pakistan as well. ... Liaquat Ali Khan Liaquat Ali Khan Nawabzaada Khan Liaquat Ali Khan (October 1, 1896 – October 16, 1951) was the first Prime Minister of Pakistan. ...

Sam Kydd, another actor who appeared in many films and on T.V. (e.g. as Mr Walton in the U.K. soap-opera Crossroads). Sam Kydd (born February 15, 1915, in Belfast, Ireland - March 26, 1982) was an Irish-born actor. ...

Nigel Benson, who became an international best-selling author. His book Dunstable in Detail is a standard reference for the town and includes details about the Grammar School. Nigel Benson (b. ...