1864 in Argentina
# 1864 in Argentina

Events in the year 1864 in Argentina.

## Incumbents

* President: Bartolomé Mitre
* Vice President: Marcos Paz

### Governors

* Buenos Aires Province: Mariano Saavedra
* Cordoba: Roque Ferreyra (starting month unknown)
* Mendoza Province: Carlos González
* Santa Fe Province: Patricio Cullen

### Vice Governors

* Buenos Aires Province: vacant

## Events

* 10 August – Uruguayan War: War breaks out between Brazil and Uruguay, despite negotiations involving Argentine Foreign Minister Rufino de Elizalde.
* 25 October – establishment of General Las Heras Partido
* 13 December – Paraguayan War: Paraguay declares war on Brazil; war with Argentina follows three months later.
* The classic aperitif Hesperidina is invented by American immigrant Melville Sewell Bagley in Buenos Aires.

## Deaths

* 30 October – Jonas Coe ("Comodoro Juan Coe"), US naval commander and supporter of Juan Manuel de Rosas (born 1805).
