Sir Arnold Henry Moore Lunn (18 April 1888 – 2 June 1974) was a skier, mountaineer and writer. He was knighted for "services to British Skiing and Anglo-Swiss relations" in 1952. His father was a lay Methodist minister, but Lunn was an agnostic and wrote critically about Catholicism before he converted to that religion at the age of 45 and became an apologist. He was born in Madras, India and died in London aged 86.