John Brewer Cameron was a geodetic surveyor in Australia. He is best known for his survey of the border between Queensland and New South Wales. He also surveyed part of the border between South Australia and Western Australia.

Queensland is the north-eastern state of Australia and has land borders with three other Australian states and territories: New South Wales, South Australia and Northern Territory. To the north of Queensland is the Torres Strait separating the Australian mainland from Papua New Guinea. To the east of Queensland is the Coral Sea, part of the Pacific Ocean. There are many islands off the Queensland coast which form part of the state of Queensland.