Jacqueline Winspear (born April 30, 1955) is a mystery writer, author of the Maisie Dobbs series of books exploring the aftermath of World War I. She has won several mystery writing awards for books in this popular series.

Winspear was raised in Cranbrook, in Kent. She was educated at the University of London's Institute of Education and then worked in academic publishing, higher education and in marketing communications. She emigrated to the United States in 1990. Winspear stated that her childhood awareness of her grandfather's suffering in World War I led to an interest in that period.

Together with The Consequences of Fear (March 2021), Jacqueline has written 16 novels in the award-winning Maisie Dobbs historical mystery series, including the New York Times bestsellers The American Agent, To Die But Once, In This Grave Hour, Journey to Munich, A Dangerous Place, Leaving Everything Most Loved, Elegy for Eddie, A Lesson in Secrets, The Mapping of Love and Death, Among The Mad and An Incomplete Revenge, as well as four other National Bestselling novels. Her standalone novel, The Care and Management of Lies, was also a New York Times and National Bestseller, and a finalist for the Dayton Literary Peace Prize.

Jacqueline has published two non-fiction books: What Would Maisie Do? (2018) based upon the series, and a memoir, This Time Next Year We’ll Be Laughing (2020). In addition, her recent published essays include Writing About War, for which she interviewed writers including Kate Atkinson, Rhys Bowen, Jeff Shaara and Adam Hochschild, exploring the impact of writing about war on the author, and Women On Fire, about women working in wildfire management. Her essay on writing the historical mystery appeared in the anthology/handbook from Mystery Writers of America: How To Write A Mystery, edited by Lee Child (April 2021)