The May 1958 crisis, also known as the Algiers putsch or the coup of 13 May, was a political crisis in France during the turmoil of the Algerian War of Independence (1954–1962) which led to the collapse of the Fourth Republic and its replacement by the Fifth Republic led by Charles de Gaulle who returned to power after a twelve-year absence. It started as a political uprising in Algiers on 13 May 1958 and then became a military coup d'état led by a coalition headed by Algiers deputy and reserve airborne officer Pierre Lagaillarde, French Generals Raoul Salan, Edmond Jouhaud, Jean Gracieux, and Jacques Massu, and by Admiral Philippe Auboyneau, commander of the Mediterranean fleet. The coup was supported by former Algerian Governor General Jacques Soustelle and his activist allies.

The Algerian War was a major armed conflict between France and the Algerian National Liberation Front (FLN) from 1954 to 1962, which led to Algeria winning its independence from France. An important decolonization war, it was a complex conflict characterized by guerrilla warfare and war crimes. The conflict also became a civil war between the different communities and within the communities. The war took place mainly on the territory of Algeria, with repercussions in metropolitan France.