Emilio Portes Gil, Mexican politician, President of Mexico (died 1978)

Emilio Cándido Portes Gil was a Mexican politician, lawyer and diplomat who served as the 48th President of Mexico from 1928 to 1930, one of three to serve out the six-year term of president-elect General Álvaro Obregón, who had been assassinated in 1928. Since the 1917 Constitution forbade re-election of a serving president, incumbent President Plutarco Elías Calles could not formally retain the presidency. Portes Gil replaced him, but Calles, the "Jefe Máximo", retained effective political power during what is known as the Maximato.

The president of Mexico, officially the president of the United Mexican States, is the head of state and head of government of Mexico. Under the Constitution of Mexico, the president heads the executive branch of the federal government and is the commander in chief of the Mexican Armed Forces. The office, which was first established by the federal Constitution of 1824, is currently held by Claudia Sheinbaum, who was sworn in on October 1, 2024. The office of the president is considered to be revolutionary, in the sense that the powers of office are derived from the Revolutionary Constitution of 1917. Another legacy of the Mexican Revolution is the Constitution's ban on re-election. Mexican presidents are limited to a single six-year term, called a sexenio. No one who has held the post, even on a caretaker basis, is allowed to run or serve again. The constitution and the office of the president closely follow the presidential system of government.