Events from the year 1966 in Argentina.
Incumbents
President: Arturo Umberto Illia (1 January - 28 June), Juan Carlos Onganía (29 June - 31 December) Vice president: Carlos Humberto Perette (1 January - 28 June), vacant
Governors
Buenos Aires Province: until 28 June: Anselmo Marini 28 June-5 July: Jorge Von Stecher from 5 July: Francisco A. Imaz Cordoba: Justo Páez Molina (until 28 June) Chubut Province: Manuel Pío Raso then Carlos Arturo Vellegal then Gerardo Ojanguren then Rodolfo Varela Mendoza Province: until 28 June: Francisco Gabrielli 28 June-22 July: Tomás José Caballero from 22 July: José Eugenio Blanco Santa Fe Province: Aldo Tessio (until 28 June); Carlos Sylvestre Begnis (from 28 June)
Vice Governors
Buenos Aires Province: vacant
Events
29 July – La Noche de los Bastones Largos
Births
11 August – Juan María Solare, composer and pianist
18 August – Gustavo Charif, artist
Deaths
26 December – Guillermo Stábile, footballer and manager (b. 1905)