Agustín Sierra Romera (Spanish pronunciation: ; born September 23, 1990, in Buenos Aires, Federal District, Argentina), also known as Agustín Sierra. Is an Argentine actor, the best known of portraying Agustín Maza in popular kids and teenage telenovela Chiquititas, but also roles in Rebelde Way, Floricienta, and Casi Ángeles.
Sierra was born in September 23, 1990, to Maria and Roberto. He has one brother and one sister.
In September 2008 Sierra was confirmed he was in a relationship with costar from Rincon de Luz, Chiquititas Sin Fin and Casi Angeles, Candela Vetrano. They broke up at the start of 2010 and said that they were together almost everyday whether they were filming,recording etc. that it seemed as if they were together for 2 years instead of 1 and a half. He also admitted that Candela was "his only serious girlfriend."