John Joseph Haldane KCHS FRSE FRSA (born 19 February 1954) is a British philosopher, commentator and broadcaster.
He was named one of Scotland's "Brights" in a list of the 50 top Scottish intellectuals, artists, lawyers, scientists, etc.
He is a regular contributor to renowned publications including The Burlington Magazine, Modern Painters, Tate and Art Monthly.
The majority of Haldane's television work is for the BBC, including The Big Questions on nuclear armament.
He has contributed to a number of programmes including The Heart of the Matter: God Under the Microscope, Newsnight, and Twenty Four Hours.
In addition to his former position as a regularly contributing columnist, Haldane has offered opinions and contributed articles to periodicals including The Times, Daily Telegraph, The Scotsman, New Statesman, The Herald, Sunday Herald, Mail on Sunday, Daily Mail, Daily Express, Contemporary Review and Economist Information Strategy.