Luis Juan Alva Castro (born 17 February 1942) is a Peruvian economist and politician.
In his political career, he achieved the government positions of Second Vice President and Prime Minister, among other portfolios during both administrations of president Alan GarcÃa.
A prominent member of the Peruvian Aprista Party, he was the party's presidential nominee in 1990, gaining a fifth of the popular vote.
He has authored numerous works about VÃctor Raúl Haya de la Torre's lifetime, being considered one of the few historians of "Aprismo" in Peru.
He currently presides the editorial "Instituto VÃctor Raúl Haya de la Torre", which publishes his works.