Jack Hooper (William John "Jack" Hooper) is the former deputy director of the Canadian Security Intelligence Service (CSIS) who became well known mainly for his role in some of Canada's most sensitive and controversial spy-service scandals, including CSIS's involvement in the case of Maher Arar, a Canadian engineer father of two who was sent to Syria where he was imprisoned without charges and tortured.Hooper was also involved in the decision making process of sending CSIS officers to Guantanamo Bay's prison to interrogate Omar Khadr, a convicted war criminal detained in Guantanamo at the age of 15.