José de la Riva Agüero, Peruvian soldier and politician, 1st President of Peru and 2nd President of North Peru (born 1783)

José Mariano de la Cruz de la Riva Agüero y Sánchez Boquete was a Peruvian soldier and politician who was the first president of Peru and the second president of North Peru, a constituent country of the Peru–Bolivian Confederation. A leading figure of the Peruvian War of Independence, he was president of Peru in 1823, being the first head of state to serve as President of the Republic and to wear the two-color presidential sash as a symbol of the power he exercised. Although this power was de facto, that is, born from a coup d'état and not by popular will expressed in elections, since it was imposed by the Peruvian Army through the so-called Balconcillo mutiny, which ordered Congress to dismiss the Supreme Governing Junta headed by José de La Mar. He governed for four months before being replaced by the Marquis of Torre Tagle. He was a supporter of liberalism.

May 21 is the 141st day of the year in the Gregorian calendar; 224 days remain until the end of the year.