de C.V., known as Gruma, is a Mexican multinational corn flour (masa) and tortilla manufacturing company headquartered in San Pedro, near Monterrey, Nuevo León, Mexico.

The first industrial production facility of corn flour in the world was opened in 1949 under the name "Molinos Azteca, S.A. de C.V.", later shortened to "Grupo Maseca".

The election of Carlos Salinas de Gortari, a close family friend of Grupo Maseca president Roberto Gonzalez Barrera, allowed Gruma to grow substantially while hastening the decline of traditional masa and tortilla production.

[2] The only two corn flour providers at the time were Grupo Maseca and the publicly-owned Miconsa; the latter was mismanaged by Salinas's administration to the point of losing almost all of its market share, leaving Gruma with a near-monopoly.

[2] Salinas also changed government policy to incentivize tortillerias to use Maseca rather than fresh masa, punishing those who refused with lower-quality corn and stricter grain limits.

Despite widespread international sanctions and calls for businesses to withdraw from the Russian market, Gruma maintains one production plant within the country.

This decision has drawn scrutiny and raised concerns about the company's ethical considerations and its alignment with international efforts to pressure Russia.

[4] Apart from its 10% interest in Banorte, Gruma operates as a holding company for a number of subsidiaries that produce, market, and distribute its various products around the world.

Gruma also produces palmito in 37,000 acres (14,973 ha) of fields in Costa Rica, to be exported to France, Spain, Belgium, Canada, and the United States.