Henry Victor Dyson Dyson (7 April 1896 – 6 June 1975), generally known as Hugo Dyson and who signed his writings H. V. D. Dyson, was an English academic and a member of the Inklings literary group. He was a committed Christian, and together with J. R. R. Tolkien he helped C. S. Lewis to convert to Christianity, particularly after a long conversation as they strolled on Addison's Walk at Oxford.