Louis Stanton Auchincloss (/ˈɔːkᵻŋklɒs/; September 27, 1917 – January 26, 2010) was an American lawyer, novelist, historian, and essayist. He is best known as a prolific novelist who parlayed his experiences into books exploring the experiences and psychology of American polite society and old money. His dry, ironic works of fiction continue the tradition of Henry James and Edith Wharton.
Gore Vidal said of his work: "Of all our novelists, Auchincloss is the only one who tells us how our rulers behave in their banks and their boardrooms, their law offices and their clubs.... Not since Dreiser has an American writer had so much to tell us about the role of money in our lives."
Born in Lawrence, New York, Auchincloss was the son of Priscilla Dixon (née Stanton) and Joseph Howland Auchincloss. His paternal grandfather, John Winthrop Auchincloss, was the brother of Edgar Stirling Auchincloss (father of James C. Auchincloss) and Hugh Dudley Auchincloss (father of Hugh D. Auchincloss, Jr.). He grew up among the privileged people about whom he would write, although, as he put it, "There was never an Auchincloss fortune…each generation of Auchincloss men either made or married its own money". He attended St. Bernard's School, Groton School and Yale University, where he was editor of the Yale Literary Magazine. Although he did not complete his undergraduate studies at Yale, he was admitted to and attended law school at the University of Virginia. He graduated in 1941 and was admitted to the New York bar the same year.