Roman Catholic Diocese of Catarman

The Diocese of Catarman (Lat: Dioecesis Catarmaniensis) is a Latin Church ecclesiastical jurisdiction or diocese of the Catholic Church in the Philippines.

Erected in 1974, the diocese is a suffragan in the ecclesiastical province of the metropolitan Archdiocese of Palo. The Diocese of Catarman has experienced no jurisdictional changes since its establishment.

Bishop Nolly Buco was appointed apostolic administrator and auxiliary bishop of Antipolo by Pope Francis when Bishop Emmanuel Trance retired as bishop of the diocese on 8 December 2023. Trance is from Calinog, Iloilo under the Archdiocese of Jaro.