Janet Ahlberg (21 October 1944 – 13 November 1994), née Janet Hall, and Allan Ahlberg (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. They worked together for 20 years until Janet died of cancer in 1994. Allan wrote the books and Janet illustrated them. Allan Ahlberg has also written dozens of books with other illustrators.
Janet Ahlberg won two Kate Greenaway Medals for illustrating their books and the 1978 winner Each Peach Pear Plum was named one of the top ten winning works for the 50th anniversary of the Medal (1955–2005).