Octavio Betancourt Arango (January 4, 1928 – June 18, 2017) was the Colombian Roman Catholic prelate.
He served as an auxiliary bishop of the Roman Catholic Archdiocese of MedellÃn from November 23, 1970 until November 10, 1975 and a bishop of the Roman Catholic Diocese of Garzón from November 10, 1975 until April 26, 1977.