Hazel Gaynor is an award-winning New York Times and internationally bestselling author renowned for her historical novels that delve into the defining events of the 20th century. She received the 2015 RNA Historical Novel award and the 2024 Audie award for Best Fiction Narrator. Her works have been shortlisted for the 2019 HWA Gold Crown and the Irish Book Awards in 2017, 2020, and 2023.

Gaynor is known for her co-authored historical novels with Heather Webb, which have been critically acclaimed and have won or been shortlisted for several international awards. She is a regular speaker at literary festivals, co-founder of The Inspiration Project, and has programmed and hosted a series of Historia Live events in association with Dublin UNESCO City of Literature in 2024.

Her novels have been translated into twenty languages and are available in twenty-seven territories, reflecting her global reach and appeal. Hazel resides in Ireland with her family.