Mariscal Nieto (Spanish mariscal marshal) is the largest of three provinces that make up the Moquegua Region of Peru.

[1][2] The capital of the province is the city of Moquegua.

Some of the highest mountains of the province are listed below:[3] The province is divided into six districts, which are: The province is inhabited by indigenous citizens of Aymara and Quechua descent.

Spanish, however, is the language which the majority of the population (79.51%) learnt to speak in childhood, 15.65% of the residents started speaking using the Aymara language and 4.45% using Quechua (2007 Peru Census).

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