Vittorio Gassman as Bruno Cortona

Jean-Louis Trintignant as Roberto Mariani

Catherine Spaak as Lilli Cortona

Claudio Gora as Danilo Borelli 'Bibi'

Luciana Angiolillo as Gianna Cortona

Linda Sini as Zia Lidia

Franca Polesello as Moglie del commendatore

Bruna Simionato as Zia Enrica

Lilly Darelli as Bikini girl with leg cast

Mila Stanić as Clara, la ragazza alla stazione

Nando Angelini as Amedeo

Edda Ferronao as La ragazza della valigia smarrita a Civitavecchia

Luigi Zerbinati as Il Commendatore

John Francis Lane as Alfredo - avvocato cugino di Roberto

Annette Stroyberg as Turista tedesca

Jacques Stany as Automobilista toscano che picchia Bruno

Paola Gassman as Girl on the beach (uncredited)

Aldo Gianni as Young man on the rocks at the end (uncredited)