Thomas Joseph Tobin (born April 1, 1948) is an American prelate of the Catholic Church. He was bishop of the Diocese of Providence in Rhode Island from 2005 to 2023. Tobin previously served as bishop of the Diocese of Youngstown in Ohio from 1996 to 2005 and as auxiliary bishop of the Diocese of Pittsburgh in Pennsylvania from 1992 to 1995.

Thomas Tobin was born on April 1, 1948, in Pittsburgh, Pennsylvania. He studied at St. Mark Seminary High School and Gannon University, both in Erie, Pennsylvania. He then entered St. Francis University in Loretto, Pennsylvania, where he received his bachelor's degree in 1969.

Tobin went to Rome to reside at the Pontifical North American College while studying at the Pontifical Gregorian University in Rome. He also pursued his graduate studies at the Pontifical Atheneum of St. Anselm in Rome.

Tobin was ordained to the priesthood by Bishop Vincent Leonard for the Diocese of Pittsburgh at the Cathedral of Saint Paul in Pittsburgh on July 21, 1973. After his ordination, the diocese assigned Tobin as an assistant pastor at St. Vitus Parish in New Castle, Pennsylvania, for six years. In 1979, he was appointed assistant pastor at St. Sebastian Parish in Ross Township. Pennsylvania, serving there until 1984.

Tobin was named administrative secretary to Bishop Anthony Bevilacqua, then associate general secretary of the diocese in 1987, and vicar general and general secretary in 1990.

On November 3, 1992, Tobin was appointed as auxiliary bishop of Pittsburgh and titular bishop of Novica by Pope John Paul II. He received his episcopal consecration on December 27, 1992, at Saint Paul Cathedral from Bishop Donald Wuerl, with Bishops Anthony Bosco and Nicholas C. Dattilo serving as co-consecrators.

John Paul II appointed Tobin as bishop of Youngstown on December 5, 1995. He was installed on February 2, 1996.

In 1997, Tobin received an honorary doctorate from Saint Francis University.