The Adventures of Tom Sawyer is an 1876 novel by Mark Twain about a boy, Tom Sawyer, growing up along the Mississippi River. It is set in the 1840s in the town of St. Petersburg, which is based on Hannibal, Missouri, where Twain lived as a boy. In the novel, Sawyer has several adventures, often with his friend Huckleberry Finn. Originally a commercial failure, the book ended up being the best-selling of Twain's works during his lifetime. Though overshadowed by its 1884 sequel, Adventures of Huckleberry Finn, the book is considered by many to be a masterpiece of American literature. It is alleged by Mark Twain to be one of the first novels to be written on a typewriter.

Samuel Langhorne Clemens, known by the pen name Mark Twain, was an American writer, humorist and essayist. He was praised as the "greatest humorist the United States has produced," with William Faulkner calling him "the father of American literature." His novels include The Adventures of Tom Sawyer (1876) and its sequel, Adventures of Huckleberry Finn (1884), with the latter often called the "Great American Novel." Twain also wrote A Connecticut Yankee in King Arthur's Court (1889) and Pudd'nhead Wilson (1894), and co-wrote The Gilded Age: A Tale of Today (1873) with Charles Dudley Warner.