Thirst (Spanish: La sed) aka Hijo de Hombre, aka Choferes del Chaco is a 1960 Argentine-Spanish war film directed by Lucas Demare. It is set during the Chaco War (1932–35) between Bolivia and Paraguay, sometimes known as the "War of the Thirst". The script is based on a chapter of Augusto Roa Bastos novel Hijo de Hombre. It was made as a co-production between Argentina Sono Film and the Spanish company Suevia Films.