1820 in Chile

The following lists events that happened during 1820 in Chile.

Incumbents
Supreme Director of Chile: Bernardo O'Higgins

February

 * 3-4 February - Capture of Valdivia
 * 18 February - Battle of Agüi

March

 * 6 March - Battle of El Toro

August

 * 20 August - The Freedom Expedition of Perú sails for Paracas.

September

 * 22 September - Battle of Pangal
 * 26 September - Battle of Tarpellanca

November

 * 25 November - Battle of Las Vegas de Talcahuano
 * 27 November - Battle of Alameda de Concepcion

Births

 * Date unknown - Silvestre Ochagavía Errázuriz, deputy for Santiago
 * 15 August - Jacinto Chacón, deputy for Santiago (died 1893)

Deaths

 * 28 September - Pedro Andrés del Alcázar (born 1752)
 * December - Pedro de Vivar (born 1742)