San Martín de Hidalgo Municipality (Spanish: Municipio de San Martín de Hidalgo) is a municipality located in the Región Valles of the state of Jalisco, Mexico.

The municipal seat is San Martín de Hidalgo.

[1] The municipality is situated in the Valley of Ameca and the Sierra de Quila, of the Mexican state of Jalisco.

Bordering the adjacent municipalities of Teuchitlán on the north, Ameca on the west, Tecolotlán on the south and Cocula on the east.

In territorial means, the municipality is divided into six regional subcommittees all chaired by the municipal seat, they are El Crucero de Santa María, El Salitre, El Tepehuaje de Morelos, Buenavista de Cañedo, and Santa Cruz de las Flores.