| Honorific-Prefix: | The Honourable |
| Sir John Fuller | |
| Office1: | Leader of the Government in the Legislative Council |
| Term Start1: | 10 July 1968 |
| Term End1: | 14 May 1976 |
| Predecessor1: | Arthur Bridges |
| Successor1: | Paul Landa |
| Office2: | Leader of the Opposition in the Legislative Council |
| Term Start2: | 14 May 1976 |
| Term End2: | 1 August 1978 |
| Predecessor2: | Leroy Serisier |
| Successor2: | Max Willis |
| Office9: | Member of the Legislative Council of New South Wales |
| Term Start9: | 23 April 1961 |
| Term End9: | 1 August 1978 |
| Birth Date: | 1917 9, df=y |
| Birth Place: | Mosman, New South Wales |
| Death Place: | Sydney, New South Wales, Australia |
| Spouse: | Eileen Webb |
| Party: | Country Party |
| Occupation: | Farmer |
Sir John Bryan Munro Fuller (22 September 1917 – 31 January 2009) was an Australian politician, a member of the New South Wales Legislative Council for the Country Party from 1961 to 1978.
Fuller was born in the Sydney suburb of Mosman in 1917, and was educated at Knox Grammar School at Wahroonga. Following his schooling, he worked in rural New South Wales and Queensland, before acquiring and settling on a farm property at Coolah. A member of the NSW Country Party since 1940, he served as a councillor on the Coolah Shire Council from 1955 to 1965.
He was elected to the New South Wales Legislative Council on 23 April 1961. During his term he served as Minister for Decentralisation and Development (1965–1973), Deputy Leader of the Government in the Legislative Council (1966–1968), Minister for Planning and Environment (1973–1976), Vice-President of the Executive Council and Leader of the Government in the Legislative Council (1968–1976) and Leader of the Opposition in the Legislative Council (1976–1978).[1]
After retiring from politics, Fuller remained actively involved in charities and organisations such as the Australian Monarchist League. He died on 31 January 2009, aged 91, after a long battle with cancer.[2]
Fuller was made a Knight Bachelor on 1 January 1974 for his work as NSW Minister for Development.[3] He was also awarded the Queen Elizabeth II Silver Jubilee Medal in 1977.[1]