The Roman Catholic Diocese of Nuevo Casas Grandes (Latin: Dioecesis Neograndicasensis) is a suffragan diocese of the Archdiocese of Chihuahua, in Mexico.

It was created as a territorial prelature in 1977 and elevated in 2000.

It has an area of 36,320, a population of 149,000, a Catholic population of 130,000, 37 priests, and 45 religious.

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