The diocese was split off from the Archdiocese of Cagayan de Oro.

The current bishop is Antonieto Dumagan Cabajog who was appointed on July 24, 2001.

[2] The jurisdiction of this diocese are the two provinces of Surigao del Norte[3] and Dinagat Islands These arms show in the chief a star for Saint Nicholas of Tolentiono, the patron saint of the diocese.

The three golden balls are Spanish doubloons and refer to the richness of the area, as there have been some gold mines in the diocese.

Thebase shows a fishing boat, referring to the main source of income for the area.