Albert Bigelow Paine was an American author and biographer who lived from 1861 to 1937. He is best known for his biographical work with Mark Twain, establishing himself as a significant figure in American literary circles during the late 19th and early 20th centuries. Paine wrote across several genres, including fiction, humor, and verse, demonstrating versatility as a writer. Beyond his creative work, he served as a member of the Pulitzer Prize Committee, contributing to the recognition and advancement of American literature during a formative period for the prize.