Andrew Noel Griffiths, born on 3 September 1961, is a celebrated Australian author who has carved out a niche in the realm of children's and comedy writing. His journey into the literary world began after his education at Yarra Valley Grammar School and his unique stint as a vocalist with alternative rock bands Gothic Farmyard and Ivory Coast. But in 1992, he found his true calling in writing, leading to the creation of iconic works such as the Just! series, The Day My Bum Went Psycho, and the widely acclaimed Treehouse series. These works not only garnered a massive following among young readers but also saw The Day My Bum Went Psycho and the Treehouse series adapted into animated television series and stage plays, showcasing Griffiths's versatile storytelling prowess.

Griffiths's literary style is distinctively marked by a blend of bathroom humor and a penchant for the grotesque, inspired by the 1845 German children's book Struwwelpeter. His work balances anarchic themes with a sense of kindness, a combination that has endeared him to readers worldwide. Beyond his writing, Griffiths is a vocal advocate for freeing children from overly protected ("cotton wool") childhoods and was a notable supporter of the September 2019 climate strikes. His collaboration with illustrator Terry Denton has been instrumental in bringing his imaginative worlds to life, making Andy Griffiths a household name in children's literature and a champion for youthful creativity and environmental awareness.

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