Andrew Noel Griffiths (born 3 September 1961) is an Australian children's and comedy writer.

[2][3] Previously a vocalist with alternative rock bands Gothic Farmyard[4] and Ivory Coast,[5] in 1992 he turned to writing.

[6] An event cited by Griffiths as instrumental in developing his literary style was when, as a child, he read the 1845 German children's book Struwwelpeter, which featured children being maimed and killed as a consequence for bad behaviour.

[7] Griffiths places an emphasis on toilet and gross-out humour in his books, and aims to balance levels of what he deems "anarchy" and "nice" within his series; he notes that his Just!

[7] Griffiths is noted as a supporter of children against what he views as "cotton wool" childhoods,[6] and, along with Denton, was a noted supporter of the September 2019 climate strikes.