Les Trente Glorieuses was a thirty-year period of economic growth in France between 1945 and 1975, following the end of the Second World War. The name was first used by the French demographer Jean Fourastié, who coined the term in 1979 with the publication of his book Les Trente Glorieuses, ou la révolution invisible de 1946 à 1975. The term is derived from Les Trois Glorieuses, the three days of revolution on 27–29 July 1830 in France.

Jean Fourastié was a French civil servant, economist, professor and public intellectual. He coined the expression Trente Glorieuses to describe the period of prosperity that France experienced from the end of World War II until the 1973 oil crisis.