Illustrators
- Graeme Arnott 1
- Helge Artelius 1
- Jose Aruego 1
- Enid Ash 8
- E.M. Ashe 1
- Camilla Ashforth 2
- Malcolm Ashman 2
- Charles Ashmore 1
- Ros Asquith 1
- L. Thomas Atherley 1
- Leslie Atkinson 2
- Mabel Lucie Attwell 82
- Clara E. Atwood 1
- John James Audubon 3
- Margaret Aulton 2
- John Austen 1
- Cyril F. Austin 1
- Henry Austin 1
- John Austin 1
- Margot Austin 1
- Robert Austin 1
- S. Austin 1
- Karen Avery 1
- Rev W. Awdry 1
- Jacqueline Ayer 1
- David Ayres 1
- Michael Ayrton 1
- Russell Ayto 1
- Robert Ayton 2