1843 in Mexico

Events in the year 1843 in Mexico.

Incumbents

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

Governors

 * 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:

Events

 * 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.

Notable deaths

 * March 21 — Guadalupe Victoria, 1st President of Mexico (b. 1786)