Boston Blackie is a fictional character created by author Jack Boyle (1881–1928). Blackie was originally depicted as a jewel thief and safecracker in Boyle's stories, and became a private detective in adaptations for films, radio and television where he was described as an "enemy to those who make him an enemy, friend to those who have no friend."

Actor Chester Morris played the character in 14 Columbia Pictures films (1941–1949) and in a 1944 NBC radio series.