Grosvenor Grammar School
|Headmistress||Dr Frances Vasey|
|Local authority||Belfast Education and Library Board|
|Colours||Green and blue|
Grosvenor Grammar School was founded (as Grosvenor High School) in 1945 by the Belfast Corporation to cope with the increase in demand for grammar-school education in the area. It was sited in Roden Street, off the Grosvenor Road, and remained there until 1958, when the school moved to Cameronian Drive in the east of the city. In 2010, the school moved to Marina Park where it is at present.
Its headmasters have been William Moles (1945–1972), Ken Reid (1972–1993), John Lockett (1993–2008), and R. S. McLoughlin (2008–2014). On the 19th December 2014 Robin McLoughlin made his final speech at Grosvenor before moving on to Banbridge Academy, making way for the schools first headmistress Dr Frances Vasey (2014-Present). 
The area from which the school draws its pupils has expanded enormously over the years, to include greater Belfast and north and mid-Down. In order to avoid confusion with non-grammar 'high schools', the school changed its name in 1993 to Grosvenor Grammar School.
Democratic Unionist politician Sammy Wilson MP MLA is a former economics teacher at the school. Michelle McIlveen MLA, also a Democratic Unionist, taught history and politics at the school. Willie Anderson (former Ireland rugby international) is a former P.E. teacher at Grosvenor.
Grosvenor also has two Irish cricket players working in the school, namely Kyle McCallan and Andrew White. Kyle took a job at Grosvenor just before he had to leave for the 2006 cricket world cup. Andrew joined the school in September 2007.
Nathan Connolly, lead guitarist of Snow Patrol is also a former pupil of the school. Alongside George Best who attended Grosvenor for a short period of time before transferring to a nearby high school.
- Grosvenor Grammar School Welcome Page
- Belfast Education and Library Board
- Grosvenor Grammar School new school announcement
- Ulster School's Cup Statistics Archive