The Diocese of Xochimilco (Latin: Dioecesis Xochimilcensis) is a Latin Church ecclesiastical territory or diocese of the Catholic Church in Mexico.
It was established on 28 September 2019 with its territory having been carved from the Archdiocese of Mexico. The diocese is a suffragan in the ecclesiastical province of the metropolitan Archdiocese of Mexico and covers 40 parishes with 655,000 Catholics.