The Diocese of Tempio-Ampurias (Latin: Dioecesis Templensis-Ampuriensis) is a Latin Church diocese of the Catholic Church in Sardinia, Italy.

[1] Ampurias was erected in 1113; the diocese of Cività, now Tempio, in 304 by St. Simplicius.

Cività was united to Ampurias by Pope Julius II in 1506.

Pope Gregory XVI suppressed the cathedral there by the Bull Quamvis aqua, 26 August 1839, and raised the Collegiate Church of St. Peter, in Tempio, to a cathedral, uniting Tempio and Ampurias, so that one bishop should govern both.

Antonio Maria Contini was appointed bishop of Ogliastra, 26 September 1882, and transferred to this diocese, 16 January 1893.