• President:
  • until March 4: Nicolás Bravo
  • March 4 – October 4: Antonio López de Santa Anna
  • starting October 4: Valentín Canalizo

Governors edit

• Aguascalientes: Mariano Chico Navarro
• Chiapas: Ignacio Barberena
• Chihuahua:
• Coahuila: Francisco Mejía/José Juan Sánchez Estrada
• Durango:
• Guanajuato:
• Guerrero:
• Jalisco: Mariano Paredes y Arrillaga/José María Jarero/José Antonio Mozo
• State of Mexico:
• Michoacán:
• Nuevo León: Manuel María de Llano
• Oaxaca:
• Puebla:
• Querétaro: Julián Juvera
• San Luis Potosí:
• Sinaloa:
• Sonora:
• Tabasco:
• Tamaulipas: Francisco Vital Fernandez/Jose Ignacio Gutierrez/Juan Nepomuceno Cortina
• Veracruz:
• Yucatán: Miguel Barbachano
• Zacatecas:

• April 30 – May 16 – Naval Battle of Campeche: Naval Battle between the Mexican Navy versus the Texas Navy and the Yucatán Navy. The battle featured the most advanced warships of its day.
• August 23 – President Antonio López de Santa Anna announced that the annexation of Texas by the United States would be considered an act of war by Mexico.

• March 21 — Guadalupe Victoria, 1st President of Mexico (b. 1786)^[1]