The Franchise Affair is a 1948 mystery novel by Josephine Tey about the investigation of a mother and daughter accused of kidnapping a local young woman. In 1990, the UK Crime Writers' Association named it one of The Top 100 Crime Novels of All Time.

Robert Blair, a local solicitor, is called on to defend two women, Marion Sharpe and her mother, who are accused of kidnapping and beating a fifteen-year-old war orphan named Betty Kane.