Thomas George Doran (February 20, 1936 – September 1, 2016) was an American prelate of the Roman Catholic Church who served as the eighth Bishop of the Diocese of Rockford, Illinois from 1994 to 2012.
Doran was born in Rockford, Illinois, and attended St. James Grade School and Campion High School, and graduated from Loras College and St. Pius X Seminary (Dubuque, Iowa) in 1958. He then furthered his studies in Rome at the Pontifical Gregorian University, from where he obtained a Licentiate of Sacred Theology in 1962.
Doran was ordained to the priesthood by Bishop Martin John O'Connor on December 20, 1961, in St. Peter's Basilica.
Upon his return to the Diocese of Rockford, Doran served in many administrative, judicial, and pastoral capacities before returning to Rome in 1975 to complete a doctorate in canon law, which he earned in 1978.