Sir Jack Martin Cuzick[2] (born 11 August 1948) is an American-born British academic, director of the Wolfson Institute of Preventive Medicine in London and head of the Centre for Cancer Prevention.

He is the John Snow Professor of Epidemiology at the Wolfson Institute, Queen Mary University of London.

[3] Cuzick was born in Hawthorne, California and attended El Segundo High School.

[1] He worked on the mathematical analysis of clinical trial methodology at Columbia University in New York City in the late 1970s and moved to Oxford University in 1978 to work with cancer epidemiologist Richard Doll.

[5] He is best known for his role conducting the IBIS trials of tamoxifen and aromatase inhibitors for chemoprevention of breast cancer in women with high risk of developing the disease.