Lion's Den (Spanish: Leonera) is a 2008 drama film directed, co-written, co-produced and co-edited by Pablo Trapero.

Addressing motherhood within the prison system, it stars Martina Gusmán, Elli Medeiros and Rodrigo Santoro.

It was Argentina's official submission for the 2009 Academy Award for Best Foreign Language Film.

Julia delivers Tomás and her mother tries to kidnap him, causing a prison riot.

When Ramiro accuses her of murdering Nahuel, her chances of raising Tomás fall.