Constitution of 1857

Federal Constitution of the United Mexican States
Original front of the 1857 Constitution
Created	1856–1857
Ratified	February 5, 1857
Location	Museo Nacional de las Intervenciones
Author(s)	1857 Constituent Congress
Signatories	1857 Constituent Congress
Purpose	National constitution to replace 1824 Constitution

The Federal Constitution of the United Mexican States of 1857 (Spanish: Constitución Federal de los Estados Unidos Mexicanos de 1857) often called simply the Constitution of 1857 is the liberal constitution drafted by 1857 Constituent Congress of Mexico during the presidency of Ignacio Comonfort. It was ratified on February 5, 1857, establishing individual rights such as freedom of speech; freedom of conscience; freedom of the press; freedom of assembly; and the right to bear arms. It also reaffirmed the abolition of slavery, eliminated debtor prison, and eliminated all forms of cruel and unusual punishment, including the death penalty.

Some articles were contrary to the interests of the Catholic Church, such as education free of dogma, the removal of institutional fueros (privileges) and the sale of property belonging to the church. The Conservative Party strongly opposed the enactment of the new constitution and this polarized Mexican society. The Reform War began as a result, and the struggles between liberals and conservatives were intensified with the implementation of the Second Mexican Empire under the support of the church. Years later, with the restored republic, the Constitution was in force throughout the country until 1917.

Having overthrown the dictatorship of Antonio Lopez de Santa Anna in 1855, liberal leader Juan Nepomuceno Álvarez Hurtado held the presidency for a short period. According to the established in Plan of Ayutla convened the Constituent Congress on October 16 the same year, in order to establish headquarters in Dolores Hidalgo to draft a new constitution of liberal ideology. The following year, the incumbent president, Ignacio Comonfort, endorsed the call for moving the headquarters to Mexico City.