Adam Gidwitz is an American author of children's books, best known for his acclaimed works A Tale Dark and Grimm (2010), In a Glass Grimmly (2012), and The Grimm Conclusion (2013). He achieved significant recognition when he received a 2017 Newbery Honor for The Inquisitor’s Tale: Or, The Three Magical Children and Their Holy Dog (2016).

In 2021, his novel A Tale Dark and Grimm was adapted into an animated miniseries on Netflix, further cementing his reputation as a significant voice in children's literature.