Jonathan Anthony Stroud is a British writer of fantasy fiction, born on 27 October 1970. He is best known for the Bartimaeus young adult sequence and the Lockwood & Co. children's series. His books are typically set in an alternative history London with fantasy elements and are noted for their satire and use of magic to reflect themes of class struggle.

The Bartimaeus sequence is the recipient of the Grand Prix de l'Imaginaire and Mythopoeic Fantasy Awards. Stroud's works have also featured on ALA Notable lists of books for children and young adults. In 2020, Netflix announced a TV series based on Lockwood & Co., with filming initiated in July 2021.