Héctor Benjamín Alterio Onorato (born 21 September 1929) is an Argentine theatre, film and television actor, well known both in Argentina and Spain.

Héctor Benjamín Alterio Onorato was born in Chacarita, Buenos Aires on 21 September 1929, to parents from Carpinone, Italy.

[1][2] Alterio's acting debut came in 1948 in stage play Cómo suicidarse en primavera ('How to commit suicide in spring').

[3] After finishing drama school, he created the Nuevo Teatro ("New Theatre") company in 1950, where he worked until 1968 and helped change the Argentine theatrical scene of the 1960s.

[4] His voice was used in Ya es tiempo de violencia (1969), an anonymous film about the Cordobazo riots which took place the same year.