David Bullock (born November 13, 1960), known as The .38 Caliber Killer, is an American serial killer who killed at least six people in New York City between December 1981 and January 1982. Owing to his unassuming appearance and character, his killing spree was undetected by local police for some time, who were unaware that a serial murderer was operating in the area.[1]

Although Bullock committed the murders four years after David Berkowitz's notorious eight serial murders, which caused a moral panic in the city, Bullock's killings were not widely reported since it was not known until his arrest that they were connected.