John Bradford Nixon (born June 28, 1949) is a former politician in Ontario, Canada.
He was elected to the Ontario legislature in the 1987 provincial election, defeating Progressive Conservative Gordon Chong by over 2,000 votes in the Toronto riding of York Mills.
Nixon lost his seat to David Turnbull of the Progressive Conservatives by over 2,500 votes.
He was a partner in the firm of Poole Milligan, and has served on the Ontario chapter of the Canadian Property Tax Association.
When that firm dissolved he became a partner in Nixon Fleet and Poole LLP.