John Brown (13 December 1821 – 23 April 1896) was an Australian politician.
He was born at Cattai Creek near Windsor to farmer David Brown and Mary Elizabeth McMahon.
A pastoralist, he married Sarah Alcorn in 1848; they had eight children.
In 1880 he was elected to the New South Wales Legislative Assembly for Patrick's Plains, but he did not re-contest in 1882.
Brown died at Jerry's Plains in 1896.