Roman Catholic Diocese of Montalcino

The Diocese of Montalcino (Latin: Dioecesis Ilcinensis) was a Roman Catholic diocese located in the town of Montalcino to the west of Pienza, close to the Crete Senesi in Val d'Orcia in Tuscany, Italy. In 1986, it was suppressed and united with the Diocese of Colle di Val d'Elsa and the Archdiocese of Siena to form the Archdiocese of Siena-Colle di Val d'Elsa-Montalcino.

1462 August 13: Established as the Diocese of Montalcino from the Diocese of Arezzo, the Diocese of Chiusi, and the Diocese of Grosseto 1772 June 15: Gained territory from the Diocese of Chiusi and the Diocese of Pienza 1986 September 30: Suppressed to the Archdiocese of Siena-Colle di Val d'Elsa-Montalcino

Erected: 13 August 1462
Latin Name: Ilcinensis
Immediately Subject to the Holy See