Lewis Henry Lapham is an American writer. He was the editor of the American monthly Harper's Magazine from 1976 until 1981, and from 1983 until 2006. He is the founder of Lapham's Quarterly, a quarterly publication about history and literature, and has written numerous books on politics and current affairs.

Harper's Magazine is a monthly magazine of literature, politics, culture, finance, and the arts. Launched in New York City in June 1850, it is the oldest continuously published monthly magazine in the United States. Harper's Magazine has won 22 National Magazine Awards.