Roman Catholic Diocese of Livorno

The Italian Catholic Diocese of Livorno in Tuscany, was created in 1806. It is a suffragan of the Archdiocese of Pisa. The current bishop is Simone Giusti.
The diocese was created by Pope Pius VII in the bull "Militantis Ecclesiae" of 25 September 1806, at the urging of Queen Maria Luisa, Regent of Tuscany. The town of Livorno was raised from the status of oppidum to that of civitas . The erection was opposed both by the Archdiocese of Pisa and the Canons of San Miniato, who would lose territory, power, and income from the change. In his bull, Pius VII cites statistics as a factor in his decision to create a new diocese: that there were about 26,000 Catholics, and in the suburbs over 46,000.

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