Thomas O'Gorman

Thomas O'Gorman (May 1, 1843 – September 18, 1921) was an American prelate of the Roman Catholic Church. He served as Bishop of Sioux Falls from 1896 until his death in 1921.

Thomas O'Gorman was born in Boston, Massachusetts, to John and Margaret (née O'Keefe) O'Gorman. He and his parents moved to Chicago, Illinois, when he was still a child, and then to St. Paul, Minnesota. In 1853 he and John Ireland were chosen by Bishop Joseph Crétin to study for the priesthood in France. Upon his return to Minnesota, O'Gorman was ordained a priest on November 5, 1865. He then served as pastor of St. John Church in Rochester until 1878, when he joined the Paulist Fathers in their missionary work in New York and also served as a curate at St. Paul Church.

He returned to Minnesota in 1882 and was then appointed pastor of Immaculate Conception Church at Faribault. In 1885 he became the first president of the newly established College of St. Thomas, where he also served as professor of dogmatic theology. He was named professor of church history at Catholic University of America in Washington, D.C. in 1890. During his tenure at Washington, he wrote A History of the Roman Catholic Church in the United States.