The Diocese of Ciudad Valles (Latin: Dioecesis Vallipolitana) is a Latin Church ecclesiastical territory diocese of the Catholic Church in Mexico.

It is a suffragan in the ecclesiastical province of the metropolitan Archdiocese of San Luis Potosí.

It was a suffragan of the Archdiocese of Monterrey until 25 November 2006.

It cathedra is found within the Cathedral of Our Lady of Guadalupe in the episcopal see of Ciudad Valles, San Luis Potosí.

This article on a Roman Catholic diocese in Mexico is a stub.