The Roman Catholic Archdiocese of Owerri (Latin: Archidioecesis Overriensis) is located in Owerri, Imo State, Nigeria.

670,986 of the 1.7 million people in the area are member of the Catholic Church.

The diocese dates back to the Vicariate Apostolic of Owerri, which was created on February 12, 1948, when the Vicariate Apostolic of Onitsha-Owerri was split.

On 27 December 2020, auxiliary bishop Moses Chikwe and his driver were kidnapped by gunmen in Owerri.

They were both released unharmed and without ransom, on 1 January 2021.