While growing up Moretti discovered his two passions, the cinema and water polo. Having finished his studies he pursued a career as a producer, and in 1973 directed his first two short films:
Pâté de bourgeois and
The Defeat (). In 1976, Nanni Moretti's first feature film
Io sono un autarchico (
I Am Self-Sufficient) was released. In 1978, he wrote, directed and starred in the movie
Ecce Bombo, which tells the story of a student having problems with his entourage. It was screened at the Cannes Festival. ''
Sogni d'oro won the Special Jury Prize at the 38th Venice International Film Festival. La messa è finita'' won the
Silver Bear – Special Jury Prize at the
36th Berlin International Film Festival. Having played
waterpolo in the B division of the Italian championship, his experience later inspired his 1989 film
Red Wood Pigeon ("palombella," which literally means "little pigeon," refers to a type of lob shot). He may be best known for his films
Caro diario (1993; followed in 1998 by a sequel,
Aprile) and
La stanza del figlio (''
The Son's Room'', 2001), the latter of which won the at the
2001 Cannes Film Festival.
The Caiman (2006) is in part about Berlusconi's controversies: in one of the three portraits of the Italian prime minister Moretti himself plays Berlusconi. His 2011 film
We Have a Pope screened In Competition at the
2011 Cannes Film Festival, follows the
conclave election of new Pope. His 2015 film
Mia Madre was selected to compete for the at the
2015 Cannes Film Festival, and won the
Prize of the Ecumenical Jury. His 2021 and 2023 films
Three Floors and
A Brighter Tomorrow were also selected to compete for the at the
2021 and
2023 Cannes Film Festival. Moretti has used certain actors several times in his films, generally playing minor roles. His father Luigi appears in 6 films, Dario Cantarelli and Mauro Fabretti in 5, Antonio Petrocelli in 4. More notable Italian actors he has employed frequently in his films include
Silvio Orlando, who appears in 5 films (including the role of protagonist in
Il caimano) and
Laura Morante, who was featured in ''
Sogni d'oro, Bianca and The Son's Room''. == Personal life ==