Adventures of Huckleberry Finn is a book by Mark Twain, first published in England in December 1884 and in the United States in February 1885. Considered as the Great American Novel, the work is among the first in major American literature to be written in the vernacular, characterized by local color regionalism. It is told in the first person by Huckleberry "Huck" Finn, a friend of Tom Sawyer and narrator of two other Twain novels (Tom Sawyer Abroad and Tom Sawyer, Detective).

The book is noted for its colorful description of people and places along the Mississippi River. Satirizing a Southern antebellum society that had ceased to exist about twenty years before the work was published, Adventures of Huckleberry Finn is an often scathing look at entrenched attitudes, particularly racism.