Ernesto Alterio (Buenos Aires, 25 July 1970) is an Argentine-born Spanish film and television actor, son of Héctor Alterio and brother of Malena Alterio.He has starred in the TV cult mini-series Vientos del agua along with his father, and has twice worked with director Marcelo Piñeyro, who frequently hires his father in roles. He works both in Spain and Argentine television.