The author of the novel Robinson Crusoe is Daniel Defoe, a five-letter word. Defoe was an English writer, journalist, and pamphleteer who lived in the 17th and 18th centuries. He is most famous for his novel Robinson Crusoe, which was published in 1719 and is considered to be one of the earliest examples of the novel genre. Defoe wrote many other works, including Moll Flanders, Roxana, and A Journal of the Plague Year.