Thomas "Tom" Sawyer is the title character of the Mark Twain novel The Adventures of Tom Sawyer (1876). He appears in three other novels by Twain: Adventures of Huckleberry Finn (1884), Tom Sawyer Abroad (1894), and Tom Sawyer, Detective (1896).

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.