Baptism of Blood (Portuguese: Batismo de Sangue) is a 2006 Brazilian film directed by Helvécio Ratton, based on Frei Betto's book of the same name.

[1][4] Starring Caio Blat and Daniel de Oliveira as Frei Tito and Betto respectively, it follows the Dominican friars' resistance against Brazilian military dictatorship.

Under the pseudonyms of "Tito", "Betto", "Oswaldo", "Fernando", and "Ivo", the friars join the Ação Libertadora Nacional, a communist guerrilla movement headed by Carlos Marighella.

Ivo and Fernando go to Rio de Janeiro but are intercepted and tortured by officers who accuse them for betraying the Church and Brazil.

Tito is the only who is released in exchange for the West German ambassador in Brazil, Ehrenfried von Holleben, being exiled in France.