One of the older dioceses in the Philippines, the Diocese of Bacolod was erected on 15 July 1932 from the territories of the Archdiocese of Cebu and the Archdiocese of Jaro [REF].
On 5 April 1955, the Diocese of Bacolod lost territory when the Diocese of Dumaguete (which the diocese covers the entire province of Negros Oriental) was erected.