Janet Ahlberg (21 October 1944 – 15 November 1994; née Hall) and Allan Ahlberg (born 5 June 1938) were a British married couple who created many children's books, including picture books that regularly appear at the top of "most popular" lists for public libraries. They worked together for 20 years until Janet's death from cancer in 1994. He wrote the books and she illustrated them. Allan Ahlberg has also written dozens of books with other illustrators.