Tom Sawyer, Detective is an 1896 novel by Mark Twain. It is a sequel to The Adventures of Tom Sawyer (1876), Adventures of Huckleberry Finn (1884), and Tom Sawyer Abroad (1894). Tom Sawyer attempts to solve a mysterious murder in this burlesque of the immensely popular detective novels of the time. Like Adventures of Huckleberry Finn, the story is told using the first-person narrative voice of Huck Finn.

Samuel Langhorne Clemens, known by his pen name Mark Twain, was an American writer, humorist, entrepreneur, publisher, and lecturer. He was lauded as the "greatest humorist the United States] has produced", and William Faulkner called him "the father of American literature".