Colin Howson (1945 – 5 January 2020) was a British philosopher. He was Professor of Philosophy at the University of Toronto, where he joined the faculty on 1 July 2008. Previously, he was Professor of Logic at the London School of Economics. He completed a PhD on the philosophy of probability in 1981. In the late 1960s he had been a research assistant of Imre Lakatos at LSE. He died on Sunday 5 January 2020.