← 1841 1840 1839 1842 in Mexico → 1843 1844 1845
Decades:	1820s 1830s 1840s 1850s 1860s
See also:	History of Mexico List of years in Mexico Timeline of Mexican history

Events in the year 1842 in Mexico.

Incumbents

• President:
  • Antonio López de Santa Anna until October 26
  • Nicolás Bravo after October 26

Governors

• Aguascalientes:
• Chiapas: Salvador Ayanegui
• Chihuahua:
• Coahuila: José Ignacio de Arizpe/ Francisco Mejía
• Durango:
• Guanajuato:
• Guerrero:
• Jalisco: Antonio Escobedo
• State of Mexico:
• Michoacán:
• Nuevo León: Manuel María de Llano
• Oaxaca:
• Puebla:
• Querétaro: Sabás Antonio Domínguez/ José Francisco Figueroa/ Julián Juvera
• San Luis Potosí:
• Sinaloa:
• Sonora:
• Tabasco:
• Tamaulipas: Jose Antonio Quintero
• Veracruz:
• Yucatán: Miguel Barbachano
• Zacatecas:

Events

• March 5 – Mexican troops led by Rafael Vasquez invade Texas, briefly occupy San Antonio, and then head back to the Rio Grande. This is the first such invasion since the Texas Revolution.

Notable births

• September 8 – Juan José Carrillo, Mayor of Santa Monica, California was born in Santa Barbara, Alta California (died 1916)
• October 8 – Francisco del Paso y Troncoso, historian and Nahuatl scholar was born in Veracruz, Veracruz (died 1916)

Notable deaths

• August 24 – Leona Vicario, supporter of the Mexican War of Independence and wife of Andrés Quintana Roo (born 1789)

Dates unknown

• Silvestre De León, soldier and third Alcalde of Victoria murdered in Victoria (born 1802) ^[1]
• José Mariano Elízaga, composer died in Morelia (born 1786)
• Agustín V. Zamorano, printer and Governor of Alta California died in San Diego (born 1798)

Notes