Dean Norris was born april 8, 1963 in South Bend, Indiana, the son of Rosemarie "Rosie" and Jack B. Norris (1930–2008), a furniture store owner. His mother was born in South Bend, to a Hungarian immigrant couple while his father was born in Chicago, Illinois, where he lived for one year until moving to South Bend. Norris has two sisters, Connie and Nikie. He graduated from Clay High School in 1981, where he says he was a straight-A student and one of the class valedictorians. While in high school, he was a member of an award-winning student-produced comedy show, Beyond Our Control which ran on the local NBC affiliate, WNDU-TV, at that time owned and operated by the University of Notre Dame. He is a 1985 graduate of Harvard College, where he majored in social studies. He also attended the Royal Academy of Dramatic Art for one year.

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