The Nuestra Belleza Mundo México title was won by Marilyn Chagoya from Veracruz who later competed in Miss World 2013 in Indonesia.

The Nuestra Belleza Mundo México pageant was held at the Poliforum del Centro de Convenciones of Tuxtla Gutiérrez, Chiapas, Mexico, on August 30, 2012 and was hosted by Mariana Berumen, Karina González and Jan.

It was the 5th edition of the Nuestra Belleza Mundo Méxicmcontest and as an official separate pageant to choose Mexico's representative to Miss World.

It is a competition showing the country's wealth embodied in the colorful and fascinating costumes made by Mexican designers combining the past and present of Mexico.

For the Nuestra Belleza México Organization, this event is very important because it discloses the creative work of the great Mexican designers and also selects the costume to represent Mexico in Miss Universe the next year.