There was a Mexican President who served for just 45 minutes, making him the “world’s briefest-serving president ever”…
“On 19 February 1913, General Victoriano Huerta overthrew President Madero. Lascuráin was one of the people who convinced Madero to resign the presidency while he was being held prisoner in the National Palace, claiming that his life was in danger if he refused.
Under the 1857 Constitution of Mexico, the vice-president, the attorney general, the foreign minister and then the interior minister stood next in line to the presidency. As well as Madero, Huerta had ousted Vice-President José María Pino Suárez and Attorney General Adolfo Valles Baca, so, to give the coup d’état some appearance of legality, he had Lascuráin, as foreign minister, assume the presidency, appoint him as his interior minister – making Huerta next in line to the presidency – and then resign. The presidency thus passed to Huerta. As a consequence, Lascuráin was president for less than an hour; sources quote figures ranging from 15 to 56 minutes. To date, Lascuráin’s presidency is the shortest in history, briefer than that of Venezuelan politician Diosdado Cabello in 2002.
Huerta called a late-night special session of Congress and, under the guns of his troops, the legislators endorsed his assumption of power. A few days later, Huerta had Madero and Suárez killed. The coup and the events surrounding it became known as la decena trágica (“”the tragic ten days””).”