The following lists events that happened during 1821 in Chile.
Incumbents Supreme Director of Chile: Bernardo O'Higgins
Events October 6 October - Cochrane sails to California. 9-10 October - Battle of las Vegas de Saldías
December 9 December - The Cementerio General de Santiago is established.
Births date unknown - Cornelio Saavedra Rodríguez (d. 1891)
Deaths 4 September - José Miguel Carrera (b. 1785) 29 October - José Antonio Errázuriz (b. 1747)
References