Douglas Imrie McKay (1879 – September 24, 1962) was an American artillery and law enforcement officer and New York City Police Department police official who served as New York City Police Commissioner in 1914. His five months in office and eventual departure from the police force were fraught with controversy, however, his two-year campaign against the New York underworld eventually rid the city of the many street gangs active since the early-to mid 19th century. In the years following his retirement, McKay also had a successful career in business, holding high-level positions in a number of corporations.