Iron Widow is a 2021 Canadian YA science fantasy novel by Xiran Jay Zhao. The novel is a mecha reimagining of the rise of the Chinese Empress Wu Zetian set in the nation of Huaxia, a futuristic reinterpretation of Medieval China. Iron Widow is a New York Times Best Seller; as of July 2022, the book has remained on the list for 34 weeks. It won the 2021 BSFA Award for "Best Book for Younger Readers" and has been nominated for two 2022 Locus Awards and the 2022 Lodestar Award for Best Young Adult Book.