Blackthorn Winter is a young adult mystery novel by Kathryn Reiss.

[2] Juliana, a fifteen-year-old girl, moves with her mother to the artists' colony of Blackthorn, England from the United States while her parents are undergoing a separation.

Critical reception for Blackthorn Winter has been mixed to positive,[3][4] and the book received reviews from the School Library Journal and Horn Book Guide.

[5] Kliatt gave Blackthorn Winter a positive review, stating that "YAs who like mysteries in atmospheric settings will enjoy this one.

"[6] The Bulletin of the Center for Children's Books gave a more mixed review, as they felt that the book had too many elements at play that made what was an otherwise enjoyable read sluggish at points.