Robert Joseph Cunningham is an American prelate of the Roman Catholic church who served as bishop of the Diocese of Syracuse in Upstate New York from 2009 to 2019. He previously served as bishop of the Diocese of Ogdensburg in Northern New York from 2004 to 2009.

The Diocese of Syracuse is a Latin Church ecclesiastical territory, or diocese, of the Catholic Church in Upstate New York in the United States. Its episcopal see is located in Syracuse. It is a suffragan diocese in the ecclesiastical province of the metropolitan Archdiocese of New York.