The Presidential Republic is the period in the history of Chile spanning from the approval of the 1925 Constitution on 18 September 1925, under the government of Arturo Alessandri Palma, to the fall of the Popular Unity government headed by the President Salvador Allende on 11 September 1973. The period spans the same time as the "Development inwards" period in Chilean economic history.

The 1973 Chilean coup d'état was a military overthrow of the democratic socialist president of Chile Salvador Allende and his Popular Unity coalition government. Allende, who has been described as the first Marxist to be democratically elected president in a Latin American liberal democracy, faced significant social unrest, political tension with the opposition-controlled National Congress of Chile, and economic warfare ordered by United States president Richard Nixon. On 11 September 1973, a group of military officers, led by General Augusto Pinochet, seized power in a coup, ending civilian rule.