A
- Verna Aardema (1911–2001) - Why Mosquitoes Buzz in People's Ears
- Rafael Ábalos (born 1956) - Grimpow
- Joan Abelove (born 1945) - Go and Come Back
- Socorro Acioli (born 1975) - The Ghost Dancer
- Richard Adams (born 1920) - Watership Down
- C. S. Adler (born 1932) - Magic of the Glits, Ghost Brother
- Aesop (6th century BC) - Fables
- Joan Aiken (1924–2004) - The Wolves of Willoughby Chase series, Arabel and Mortimer series
- Yahya Alavi Fard (born 1973) - This Is Innovation
- Vivien Alcock (1924–2003) - The Haunting of Cassie Palmer
- Louisa May Alcott (1832–1888) - Little Women
- Lloyd Alexander (1924–2007) - The Chronicles of Prydain, Westmark series
- Joseph Alexander Altsheler (1862–1919) - The Young Trailers series, the Civil War series
- David Almond (born 1951) - Skellig, Heaven Eyes, Kit's Wilderness
- Julia Alvarez (born 1950) - Tia Lola series
- Hans Christian Andersen (1805–1875) - The Snow Queen, The Little Mermaid, The Ugly Duckling, The Emperor's New Clothes, The Princess and the Pea, Thumbelina
- K. A. Applegate (born 1956) - Animorphs, Remnants, Everworld series
- Victor Appleton - Tom Swift
- Philip Ardagh - Eddie Dickens series, Unlikely Exploits series
- Edward Ardizzone (1900–1979) - Tim All Alone, Tim and the Brave Sea Captain
- Laura Adams Armer (1874–1963) - Waterless Mountain
- William H. Armstrong (1914–1999) - Sounder
- Tedd Arnold (born 1949) - No Jumping on the Bed!, Parts
- Frank Asch (born 1946) - I Can Blink, Happy Birthday Moon
- Martin Auer (born 1951) - Now, Now, Markus, The Blue Boy
- Steve Augarde (born 1950) - The Various, Celandine
- Harold Avery (1869–1943) - The Triple Alliance, Play the Game
- Avi (born 1937) - Crispin: The Cross of Lead, The True Confessions of Charlotte Doyle
- Christopher Awdry (born 1940) - The Railway Series Nos. 27-40 Thomas the Tank Engine stories
- Wilbert Awdry (1911–1997) - The Railway Series Nos. 1–26 Thomas the Tank Engine stories
Read more about this topic: List Of Children's Literature Authors