1. Incumbents

2. Events

3. Births

4. Deaths

Events in the year 1851 in Argentina.

Incumbents

• Governor of Buenos Aires Province: Juan Manuel de Rosas (de facto Head of State of Argentina)

Events

• May 1 – governors Justo José de Urquiza of Entre Rios and Benjamin Virasoro of Corrientes rise up against Rosas
• May 29 – Corrientes and Entre Rios enter into alliance with Uruguay and Empire of Brazil
• August 18 – Rosas declares war on Empire of Brazil

Births

• March 19 – Roque Sáenz Peña, President 1910–1914

Deaths

• Charles Henry Crompton-Roberts
• Charles Henry (Cáthal Ainrí) Ó Néill
• Charles Henry Davis (businessman)
• Charles Henry Davis (businessperson)
• Charles Henry De Groat
• Charles Henry Dessalines d'Orbigny
• Charles Henry Emerson
• Charles Henry Ferguson
• Charles Henry Fernald
• Charles Henry Goode
• Charles Henry Grant
• Charles Henry Grosvenor
• Charles Henry Hall
• Charles Henry Hall (disambiguation)
• Charles Henry Hamilton Wright
• Charles Henry Hand
• Charles Henry Hartshorne
• Charles Henry Herbert Cook
• Charles Henry Hutchings
• Charles Henry Ingersoll
• Charles Henry Jeens
• Charles Henry Jones (businessman)
• Charles Henry Judd
• Charles Henry Lambert
• Charles Henry Laws