Josh Greenhut is a Toronto-based author of children's fiction. He is the author of the children's fiction series Flat Stanley's Worldwide Adventures, books five to 12.

Greenhut and Lindsay Mattick are the co-authors of Winnie's Great War, a middle grade book about the story of the Canadian black bear that inspired Winnie-the-Pooh. The book is a finalist for the 2018 Governor General's Literary Award for young people's literature — text.