The district of Saint-Maurice is a district in the canton of Valais in Switzerland. It has a population of 14,102 (as of 31 December 2020).

It comprises the following municipalities:

On 1 January 2013 the former municipality of Mex (VS) merged into the municipality of Saint-Maurice.

The blazon of the district coat of arms is Per pale Azure and Gules, overall a Cross bottony Argent.

Saint-Maurice has a population (as of December 2020) of 14,102. Most of the population (as of 2000) speaks French (9,391 or 90.1%) as their first language, Italian is the second most common (232 or 2.2%) and German is the third (206 or 2.0%). There are 2 people who speak Romansh.