Union for Peru is a Peruvian political party founded by Javier Pérez de Cuéllar, an ex-UN Secretary General, in 1994 to run for the presidency of Peru in the 1995 general elections. Originally a social democratic party, the party became the main political home of the Peruvian ethnocacerist movement in the late-2010s after a group led by former Army Major Antauro Humala joined the party. Humala later formed the Patriotic Front in 2018 and contested the 2021 general elections.

Javier Felipe Ricardo Pérez de Cuéllar de la Guerra was a Peruvian diplomat and politician who served as the fifth Secretary-General of the United Nations from 1982 to 1991. He later served as Prime Minister of Peru from 2000 to 2001.