The Roman Catholic Diocese of Brugnato (Latin: Dioecesis Brugnatensis) was a Roman Catholic diocese located in the city of Brugnato in the Province of La Spezia in the Italian region Liguria of Italy. On 25 November 1820, it was united with and suppressed to the Diocese of Luni e Sarzana to form the Diocese of Luni, Sarzana e Brugnato.
1133 May 27: Established as Diocese of Brugnato from the Archdiocese of Genoa and Diocese of Luni
1797 July 4: Lost territory to establish Diocese of Pontremoli
1854: Lost territory to the Diocese of Massa Carrara
1855: Lost territory to the Diocese of Pontremoli
1929 January 12: Lost territory to establish the Diocese of La Spezia
1959 July 26: Gained territory from Diocese of Apuania and exchanged territory with Diocese of Chiavari
1986 September 30: Suppressed to the Diocese of La Spezia–Sarzana–Brugnato)
Erected: 1133
Latin Name: Brugnatensis
Metropolitan: Archdiocese of Genoa
Barthelemy Uggeri (23 Dec 1467 - 1479 Died)
Antonio Da Valditaro (1478 - 1491 Died)
Simone Chiavari, O.S.B. (11 Apr 1492 - 1502 Resigned)
Lorenzo Fieschi (28 Sep 1502 - 24 May 1510 Appointed, Bishop of Ascoli Piceno)
Melchiorre Grimaldi (24 May 1510 - 1512 Died)
Filippo Sauli (14 Jun 1512 - 1528 Died)
Girolamo Grimaldi (25 Sep 1528 - 6 Jun 1535 Resigned)
Agostino Trivulzio (21 Feb 1539 - 5 Mar 1548 Resigned)
Antonio Cogorno, O.P. (5 Mar 1548 - 1565 Resigned)
Giulo Sauli (26 Oct 1565 - 1570 Died)
Antonio Paliettino (de Monelia), O.F.M. Conv. (16 Jul 1571 - 1578 Died)
Nicolò Mascardi (30 Jan 1579 - 9 Apr 1584 Appointed, Bishop of Accia and Mariana)
Camillo Daddeo (Doddeo) (13 Aug 1584 - 15 Apr 1592 Appointed, Bishop of Fossano)
Stefano Bagliani (Baliano) (11 May 1592 - 1609 Died)
Francesco Mottini (29 Apr 1609 - 1623 Died)
Vincenzo Giovanni Spínola, O.S.A. (6 Mar 1623 - 1639 Died)
Francesco Durazzi (16 Jan 1640 - 15 May 1652 Died)
Giantommaso Gastaldi, O.P. (26 Aug 1652 - 1655 Died)
Giovanni Battista Paggi (bishop), B. (14 Jun 1655 - 8 Feb 1663 Died)
Giambattista Dadece (de Dece), C.R. (2 Jul 1663 - 28 Apr 1696 Died)
François Marie Sacco, C.R. (27 Mar 1697 - 21 Dec 1721 Died)
Nicolò Leopoldo Lomellini (23 Sep 1722 - 20 Apr 1754 Died)
Domenico Tatis, O.S.B. (22 Jul 1754 - 29 Oct 1765 Died)
Francesco Maria Gentile (31 Aug 1767 - 26 Sep 1791 Appointed, Bishop of Luni e Sarzana)
Giovanni Luca Solari (18 Jun 1792 - 26 Sep 1810 Died)
25 November 1820: United with and suppressed to the Diocese of Luni e Sarzana to form the Diocese of Luni, Sarzana e Brugnato
