Lord of Scoundrels is a Regency romance novel by American author Loretta Chase. Published in 1995 by Avon Books, it is the third installment of her Débauchés series. Set in 1828, the story follows the Marquess of Dain, an aristocrat known as "Lord Beelzebub" and the "Lord of Scoundrels" for his unscrupulous, immoral behavior. The son of an English father and Italian mother, Dain is hardened due to a difficult childhood and meets his match in Jessica Trent, a 27-year-old bluestocking more than capable of trading wits with him.