'''Oyarzún''' or '''Oyarzun''' is a surname. Notable people with the surname include:
*Alain Oyarzun (born 1993), Spanish professional footballer *Aureliano Oyarzún (1858–1947), Chilean physician and anthropologist *Carlos Oyarzun (born 1981), Chilean professional road cyclist *Diego Oyarzún (born 1993), Chilean professional footballer *Elías Oyarzún (born 1988), Chilean handball player *Enrique Oyarzún Mondaca (1860–1849), Chilean politician, lawyer, President of the Senate of Chile *Juan Carlos Oyarzún (1951–2021), Argentine politician *Leonor Oyarzún (1919–2022), Chilean family therapist, First Lady of Chile (1990–1994) *Luis Oyarzún (footballer) (born 1982), Chilean former footballer *Luis Oyarzún Peña, Chilean writer and aesthetician *María Eugenia Oyarzún (born 1936), Chilean journalist, writer, and former diplomat *María José Oyarzún (born 1980), Chilean teacher, member of the Chilean Constitutional Convention *Mila Oyarzún (1912–1982), Chilean writer, poet and human rights activist *Nelson Oyarzún (1943–1978), Chilean football manager *Román Oyarzun Oyarzun (1882–1968), Spanish political activist, publisher, diplomat, entrepreneur, historian *Víctor Oyarzún (born 1980), Chilean footballer
==See also== *Estadio Municipal Nelson Oyarzún Arenas, stadium located in Chillán, Chile *Spanish name for Oiartzun, a town and municipality in the Basque Country
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