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28 February - The 1945 South American Championship current Copa América, ends; Argentina is crowned champion, second place goes to Brazil, followed by Chile in third place, and Uruguay in fourth place.
March[]
4 March – Chilean parliamentary election, 1945
April[]
20 April - The 3rd edition of the Championship of Champions begins.
May[]
14 May - The President of the Republic, Juan Antonio Rios, forms a new cabinet made up of the Radical,Democratic,Authentic Socialist and National Falange parties.
15 May - The senators and deputies elected in the election of March 4 take office for the period May 15, 1945 - May 15, 1949.
20 May - The 3rd edition of the Championship of Champions ends,Colo-Colo is crowned champion of the championship.
June[]
19 June – 1945 El Teniente mining accident;355 workers die from carbon monoxide emissions. It is considered the largest accident in a metallurgical mine in the world.
26 June - Chile is one of the 51 founding states of the United Nations Organization when signing the Charter of the United Nations in San Francisco, United States.
October[]
12 October - The Independencia Stadium is inaugurated in the commune of Independencia,Santiago and belonging to the Club Deportivo Universidad Catolica.
December[]
10 December - Professor Gabriela Mistral receives the Nobel Prize for Literature awarded by the Swedish Academy.
