Her acting portfolio includes roles in acclaimed projects such as La sconosciuta, by Giuseppe Tornatore and Third Person by Paul Haggis.

Transitioning into production, Marengo produced projects such as The Humbling, starring Al Pacino, Blackbird, featuring Susan Sarandon and Kate Winslet and the acclaimed documentary Ennio directed by Giuseppe Tornatore.

[1] In 2003, Gisella Marengo participated in Pupi Avati's film "Il cuore altrove" alongside Giancarlo Giannini,[2] and in 2005, she played the role of Mina in the thriller "Mary.

[8] In 2009, she played one of the lead roles in the TV film "Doc West," directed by Giulio Base and shot in English in New Mexico.

[15] Directed by Oscar winning director Giuseppe Tornatore, the documentary features interviews with world-class artists, including Clint Eastwood, Quentin Tarantino, Hans Zimmer, and Bruce Springsteen.

[1] She is an ambassador for "Artists for Peace and Justice," an organization primarily focused on serving the communities of Haiti with programs in education and healthcare.