Bishop Robert J. Cunningham, son of the late Cecil and Grace Cunningham, was born and raised in Buffalo, New York. He received his early education at St. John the Baptist Parish Elementary School and the Diocesan Preparatory Seminary, Buffalo. His college and seminary education continued at St. John Vianney Seminary, East Aurora, where he earned both Bachelor of Arts and Master of Divinity degrees. In 1978 he received a Licentiate Degree in Canon Law from Catholic University of America.
Bishop Cunningham was ordained to the priesthood by Auxiliary Bishop Bernard J. McLaughlin on May 24, 1969 at St. Joseph New Cathedral in Buffalo. His first assignment was associate pastor at Blessed Sacrament Parish, Kenmore. In 1972 he became the assistant pastor at his home parish of St. John the Baptist, Kenmore.
He was named secretary to Bishop Edward D. Head and assistant chancellor of the Diocese of Buffalo in 1974. Upon the completion of his Licentiate Degree in Canon Law, Bishop Cunningham was named a judge in the marriage tribunal and vice-chancellor of the diocese. He was named a Monsignor by Pope John Paul II in 1984. In 1985 he was appointed chancellor for the diocese and the following year, vicar general. In January 2002, Bishop Henry J. Mansell named Bishop Cunningham pastor of St. Louis Church in downtown Buffalo. In December 2003, the diocesan College of Consultors in Buffalo elected him diocesan administrator, a position he held until his installation as the Bishop of Ogdensburg. On March 9, 2004 His Holiness Pope John Paul II appointed Msgr. Robert J. Cunningham as the 13th Bishop of Ogdensburg. Bishop Cunningham was ordained and installed as the Bishop of Ogdensburg on May 18, 2004 at St. Mary’s Cathedral in Ogdensburg.
On April 21, 2009 His Holiness Pope Benedict XVI appointed Bishop Cunningham as the 10th Bishop of the Diocese of Syracuse. He was installed as the Bishop of Syracuse on May 26, 2009 at the Cathedral of the Immaculate Conception in Syracuse. The Diocese of Syracuse was established November 26, 1886 and covers 5,479 square miles. On September 21, 2012 Bishop Cunningham was appointed Apostolic Administrator of the Diocese of Rochester, NY, until the appointment of a new bishop, a position held concurrent with the Diocese of Syracuse.
On June 4, 2019, Bishop Cunningham became Bishop-emeritus of the Diocese of Syracuse upon the ordination and installation of Most Rev. Douglas J. Lucia as the 11th Bishop of Syracuse.