The Porfiriato is a term given to the period when General Porfirio Díaz ruled Mexico as president in the late 19th and early 20th centuries, coined by Mexican historian Daniel Cosío Villegas. Seizing power in a coup in 1876, Díaz pursued a policy of "order and progress," inviting foreign investment in Mexico and maintaining social and political order, by force if necessary. Díaz was an astute military leader and liberal politician who built a national base of supporters. He maintained a stable relationship with the Catholic Church by avoiding the enforcement of constitutional anticlerical laws.

The country's infrastructure was greatly improved through increased foreign investment from Britain and the United States, and a strong, participatory central government.Increased tax revenue and better administration dramatically improved public safety, public health, railways, mining, industry, foreign trade, and national finances. Díaz modernized the army and suppressed some banditry. After a half-century of stagnation, where per capita income was merely a tenth of the developed nations such as Britain and the US, the Mexican economy took off and grew at an annual rate of 2.3% (1877 to 1910), which was high by world standards.

As Díaz approached his 80th birthday in 1910, having been continuously elected since 1884, he still had not put in place a plan for his succession. The fraudulent 1910 elections are usually seen as the end of the Porfiriato. Violence broke out, Díaz was forced to resign and go into exile, and Mexico experienced a decade of regional civil war, the Mexican Revolution.