Thomas Anthony Welch (November 2, 1884 – September 9, 1959) was an American prelate of the Roman Catholic Church.

[1] He was ordained to the priesthood for the Archdiocese of St. Paul and Minneapolis on June 11, 1909.

[1] On December 17, 1925, Welch was appointed the third bishop of the Diocese of Duluth by Pope Pius XI.

[2] He received his episcopal consecration on February 3, 1926, from Archbishop Dowling, with Bishops James O'Reilly and Joseph Busch serving as co-consecrators.

[2] During his 33-year tenure, Welch remedied the financial crisis in the diocese and also constructed the Cathedral of Our Lady of the Rosary.