The author of the beloved children's book Matilda is Roald Dahl, a four-letter word spelled DAHL. Dahl was a British novelist, short story writer, poet, screenwriter, and fighter pilot. He wrote many popular books for children, including Charlie and the Chocolate Factory, James and the Giant Peach, The BFG, and Fantastic Mr. Fox. He is considered one of the greatest storytellers of the 20th century.