The Knight of Sainte-Hermine (published in France in 2005 under the title Le Chevalier de Sainte-Hermine, and translated to English under the title The Last Cavalier) is an unfinished historical novel by Alexandre Dumas, believed to be Dumas' last major work. The novel was lost until the late twentieth century. Dumas scholar Claude Schopp found an almost-complete copy in the form of a newspaper serial. A number of Dumas' previously forgotten works have been found, but this novel is the largest and most complete at 900 pages.
The novel is a swashbuckling tale set during the rise of the Napoleonic Empire. A key scene features the Battle of Trafalgar and the death of British admiral Horatio Nelson. It was translated into English and published in 2007 as The Last Cavalier, and has since been translated into other languages.