贾斯汀·皮尔斯，Born in London, England to a Welsh mother and an Australian father, Justin Charles Pierce was raised in the Marble Hill section of Manhattan, New York City. He attended P.S. 7 in the Bronx for Elementary School and J.H.S. 141 in the Riverdale section of the Bronx for Junior High School. Pierce's parents divorced when he was 15 years old.