John Francis Timoney (July 2, 1948 – August 16, 2016) was an American policeman and law enforcement executive.
He served as Chief of the Miami Police Department from 2003-10.
He was previously Commissioner of the Philadelphia Police Department (1998–2002) and held a variety of positions with the New York Police Department (1967–96), including its Chief of Department (senior sworn/uniformed position) and First Deputy Commissioner (second position).
He worked for the Ministry of the Interior of Bahrain as a police consultant.
Timoney drew both international praise and criticism for his handling of mass protests.