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← 1856 1855 1854 1857 in Mexico → 1858 1859 1860
Decades:	1830s 1840s 1850s 1860s 1870s
See also:	History of Mexico List of years in Mexico Timeline of Mexican history

Events in the year 1857 in Mexico

• President: Ignacio Comonfort
• Interior Secretary (SEGOB): José María Lafragua/Ignacio de la Llave/Jesús Terán Peredo/ José María Cortés y Esparza

• Aguascalientes: Jesús Santiago Vidaurri Peredo
• Chiapas: Ángel Albino Corzo
• Chihuahua:
• Coahuila: Santiago Vidaurri
• Colima: Manuel Álvarez/José Washington/José Silverio Núñez
• Durango:
• Guanajuato:
• Guerrero:
• Jalisco: Anastasio Parrodi/Jesús Leandro Camarena/José Silverio Núñez
• State of Mexico:
• Michoacán:
• Nuevo León: Santiago Vidaurri
• Oaxaca:
• Puebla:
• Querétaro: Silvestre Méndez/Sabino Flores/José María Arteaga/Manuel Montes Navarrete
• San Luis Potosí:
• Sinaloa:
• Sonora:
• Tabasco:
• Tamaulipas: Santiago Vidaurri
• Veracruz: Manuel Gutiérrez Zamora/José de Emparán/Manuel Gutiérrez Zamora
• Yucatán:
• Zacatecas:

• February 5 – ratification of the Federal Constitution of the United Mexican States of 1857^[1]
• March 15 - President Comonfort signs the law adopting the metric system^[2]
• April 1–8 – Reform War: Crabb Massacre

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• Fernández, Iñigo (2002). History of Mexico: A Journey from Prehistoric Times to the Present Day. Translated by David B. Castledine. Monclem Ediciones. ISBN 970-9019-12-0.