Richard Mervyn Hare FBA (1919–2002), usually cited as R. M. Hare, was an English moral philosopher who held the post of White's Professor of Moral Philosophy at the University of Oxford from 1966 until 1983. He subsequently taught for a number of years at the University of Florida. His meta-ethical theories were influential during the second half of the twentieth century. Hare is best known for his development of prescriptivism as a meta-ethical theory, the analysis of formal features of moral discourse justifying preference utilitarianism.