The Diocese of Arezzo-Cortona-Sansepolcro (Latin: Dioecesis Arretina-Cortonensis-Biturgensis seu Burgi Sancti Sepulchri) is a Latin diocese of the Catholic Church. It has existed since 1986. In that year the historic diocese of Arezzo was combined with the diocese of Cortona and the diocese of Sansepolcro, the enlarged diocese being suffragan of the archdiocese of Florence.
