1955 in Argentina

Incumbents

• President: Juan Peron until September 21, Eduardo Lonardi until November 12, Pedro Eugenio Aramburu
• [Vice President of Argentina|President of Argentina|Vice President]: Alberto Teisaire until September 23, Isaac Rojas

Governors

• Buenos Aires Province:
• * until 25 September: Carlos Aloé
• * 25 September-10 November: Arturo Ossorio Arana
• * from 10 November: Juan María Mathet
• Cordoba: Raúl Lucini
• Mendoza Province:
• * until 15 September: Carlos Horacio Evans
• * 15 September-13 December: Roberto Nazar
• * from 13 December: Héctor Ladvocat

Vice Governors

• Buenos Aires Province: vacant

Events

• June 16 - Bombing of Plaza de Mayo: failed attempt by Argentine Naval Aviation to overthrow President Peron
• September 16 - Revolución Libertadora: Peron overthrown
• September-Major General Eduardo Lonardi took office as president. He wanted to rebuild the democratic government, but was overthrown.
• September- Major General Pedro Eugenio Aramburu overthrew Lonardi.

Deaths

• June 16 - Benjamín Gargiulo, vice-admiral, suicide