Jonathan Strange & Mr Norrell

Jonathan Strange & Mr Norrell is the debut novel by British writer Susanna Clarke. Published in 2004, it is an alternative history set in 19th-century England around the time of the Napoleonic Wars. Its premise is that magic once existed in England and has returned with two men: Gilbert Norrell and Jonathan Strange. Centred on the relationship between these two men, the novel investigates the nature of "Englishness" and the boundaries between reason and unreason, Anglo-Saxon and Anglo-Dane, and Northern and Southern English cultural tropes. It has been described as a fantasy novel, an alternative history, and a historical novel.

The narrative draws on various Romantic literary traditions, such as the comedy of manners, the Gothic tale, and the Byronic hero. The novel's language is a pastiche of 19th-century writing styles, such as those of Jane Austen and Charles Dickens.

Clarke began writing Jonathan Strange & Mr Norrell in 1992; ten years later she submitted the manuscript for publication. It was accepted by Bloomsbury and published in September 2004, with illustrations by Portia Rosenberg. The novel was well received by critics and reached number three on the New York Times Best Seller list. It was longlisted for the 2004 Man Booker Prize and won the 2005 Hugo Award for Best Novel.