- Peter Gonzales Falcon
- Fellini, Age 18
- Fiona Florence
- Dolores - Young Prostitute
- Pia De Doses
- Princess Domitilla
- Marne Maitland
- Guide in the Catacombs
- Renato Giovannoli
- Cardinal Ottaviani
- Elisa Mainardi
- Pharmacist's wife / Cinema spectator
- Galliano Sbarra
- Music Hall Compere
- Anna Magnani
- Anna Magnani
- Stefano Mayore
- Fellini as a Child
- Vito Abbonato
- Young policeman
- Alfredo Adami
- Widowers' Member at Teatrino
- Sbarra Adami
- (uncredited)
- Ennio Antonelli
- Toll Booth Agent
- Salvatore Baccaro
- Sitting Man at Trastevere
- Bruno Bertocci
- Musical Director
- Bireno
- (uncredited)
- Luisa Bixio
- Audience Member at Teatrino
- Augusto Brenna
- Vestment Show Model
- Sisto Brunetti
- Fascist
- Arnaldo Caivano
- Cardinal
- Dolores Calò
- Nun
- Aristide Caporale
- Giudizio
- Giuseppe Cardone
- Waiter
- Mara Carisi
- Normal Brothel Prostitute
- Angelo Casadei
- Tourist
- Lella Cattaneo
- Normal Brothel Prostitute
- Lucia Cavalieri
- Old Woman at the Boarding House
- Feodor Chaliapin Jr.
- Actor Playing Julius Cesar
- Gianluigi Chirizzi
- Filippetto - Aristocrat
- Dennis Christopher
- The Hippie
- Alfredo Ciarpelloni
- Angry Man in Car / Brothel Client (uncredited)
- Franco Citti
- Man at Restaurant
- Dante Cleri
- Cinema Spectator with Family
- Nancy Cohen
- American Teenager
- Franz Colangeli
- Brothel Client
- Severino D'Ottavi
- Monsignor
- Catharina Dahlin
- ?
- Manlio Dalla Pria
- Luxury Brothel Client
- Angela De Leo
- (uncredited)
- Olga De Marco
- Audience Member at Teatrino
- Rolando De Santis
- Audience Member at Teatrino
- Maria De Sisti
- Owner of the Inn
- Mario Del Vago
- Widowers' Member at Teatrino
- Domenico Demitri
- Officer at Brothel
- Marcello Di Falco
- Son of the Boarding House Owner
- Francesco Di Giacomo
- Man at the Brothel
- Gianni Di Segni
- Boxe Referee / Fascist Gymmastic Tests Judge (uncredited)
- Giovanna Di Vita
- Prostitute
- Alberigo Donadeo
- Passerby
- John P. Dulaney
- Jeep driver
- Andrea Fantasia
- Man with Net on Head in the Shelter
- Federico Fellini
- Federico Fellini
- René Fiorentini
- ?
- Aldo Formisano
- Man Holding Angry Friend at Trastevere
- Iolanda Fortini
- Soccer Team Supporter
- Lina Franchi
- Luxury Brothel Prostitute
- Ferruccio Fregonese
- Monsignor
- Libero Frissi
- (uncredited)
- Annunziata Fuciarelli
- Trattoria Diner
- Biagio Gambini
- Angry Firefighter at GRA
- Nella Gambini
- Motorbike Rider
- Norma Giacchero
- Interviewer
- Roberto Giancaterini
- Bully #2 - Teatrino
- Veriano Ginesi
- Audience Member at Teatrino
- Eleonora Giorgi
- Motorbike Rider
- Mario Ingrassia
- Brothel Client
- Gudrun Mardou Khiess
- (uncredited)
- John Francis Lane
- John
- Franco Magno
- The President
- Eleonora Marchianti
- Mother at Cinema
- Cesare Martignoni
- Boarding House Tenant
- Loredana Martinez
- Loredana
- Ettore Martini
- Tavern Customer
- Petar Martinovitch
- Bare-chested Restaurant Diner
- Marcello Mastroianni
- Marcello Mastroianni
- Chuck McCann
- Chuck
- Mario Meniconi
- Trattoria Diner
- Adalberto Maria Merli
- Narrator
- Romano Moraschini
- Teatrino della Barafonda Spectator
- Elliott Murphy
- Extra
- Paola Natale
- (uncredited)
- Nello Palladino
- Brothel Client
- Orlando Pallamari
- Angry Cinema Spectator
- Ada Passeri
- Audience Member at Teatrino / Woman at Festa de Noantri (uncredited)
- Raout Paule
- (uncredited) (unconfirmed)
- Osvaldo Peccioli
- Luxury Brothel Client
- Fulvio Pellegrino
- Audience Member at Teatrino
- Filippo Perego
- Restaurant Customer
- Anna Maria Pescatori
- Roma
- Cassandra Peterson
- (uncredited)
- Gene Poe
- American Hippie
- Mimmo Poli
- Roman Eating in Terrace
- Antonio Proietti
- Priest at Fashion Show
- Marie Párová
- (uncredited)
- Alfredo Quadrelli
- Bald Man at Trastevere
- Alessandro Quasimodo
- Princesse's Guest
- Domenico Ravenna
- Trattoria Diner
- Teresa Rossi Passante
- Luxury Brothel Maîtresse
- Ivana Rumor
- Elderly Member of Trio Fisa
- Amerigo Santarelli
- Restaurant Diner
- Giulio Saturnino
- Man Washing Self at Nasone
- Pupita Lea Scuderoni
- Nun
- Giovanni Serboli
- (uncredited)
- Faustone Signoretti
- Trattoria Diner
- Alberto Sordi
- Self - Interviewé
- Guglielmo Spoletini
- Spectator Box Match at Festa de Noantri
- Alessandro Tedeschi
- Vestment Show Model
- Maria Tedeschi
- Tourist on Bus / Nun (uncredited)
- Nino Terzo
- Trattoria Waiter
- Filippo Trincia
- Restaurant Diner at Young Fellini's Table
- Franco Venditti
- Cameo
- Gore Vidal
- Gore Vidal
- Alvaro Vitali
- Alvaro - Tap Dancer at Teatrino
- Lidia Zanussi
- Luxury Brothel Maîtresse
- Renato Zero
- Extra
