Jack Maple was an American law enforcement official who served as a Deputy Commissioner of the New York City Police Department (NYPD) during the 1990s. He was born in Queens, New York City in 1951, and began his career as a police officer in the NYPD in 1973. He quickly rose through the ranks, and in 1994, he was appointed as Deputy Commissioner for Operations by then-Police Commissioner William Bratton.

Maple was known for his innovative approach to policing, and he played a key role in the development of the "CompStat" system, which was implemented by the NYPD in the mid-1990s. CompStat is a crime-tracking and management system that uses data and mapping to identify crime hotspots and deploy police resources more effectively. This system was later adopted by other cities and police departments around the country, and was credited with helping to reduce crime in New York City.

Maple also played a key role in the development of the "broken windows" theory of policing, which emphasizes the importance of addressing small, visible crimes in order to prevent more serious crimes from occurring. This theory was also implemented by the NYPD and helped to reduce crime in the city.

He left the NYPD in 1996 to start his own consulting firm, The Maple Group, which helped cities and police departments around the country to implement the CompStat system.

Maple passed away in 2001 at the age of 49, due to colon cancer.