Giuliana De Sio was born in Salerno and grew up in Cava de 'Tirreni, where her family originates from. De Sio's first public appearance was her when she was five in a show at the Teatro Verdi in Salerno. She moved to Terrasini when she was eighteen to live in a hippy commune before moving to Rome, where she befriended Teresa Ann Savoy and Alessandro Haber, who encouraged her to start acting. Her professional debut took place in 1976 when Gianni Bongiovanni chose her for Una donna. Elio Petri then gave her a part of her in Mani dirty di lei and Tonino Cervi chooses her to act in The Imaginary Sick with Alberto Sordi. In the early 1980s she meets Massimo Troisi, who chooses her for an important role in her second film, Sorry for the delay (1982). She subsequently worked with Francesco Nuti in The Pool Hustlers (1982) and Casablanca Casablanca (1985).
TBARaqmar as Unknown
2024Per sempre al Massimo as Unknown
2023Ares Gate: La fabbrica delle illusioni as Self (archive footage)
2022Buon Lavoro as Unknown
2020TV Story Superstar (1 Episode) as Self (archive footage)
2017The Truth About Love Is... as Roberta
2017Amore pensaci tu (20 Episodes) as Tina
2017Il bello delle donne... alcuni anni dopo (8 Episodes) as Annalisa Bottelli
2014Roma, Napoli, Venezia... in un crescendo rossiniano as Isabella Colbran
2014Furore il vento della speranza (6 Episodes) as Irma Voglino
2014Rodolfo Valentino - La leggenda (2 Episodes) as Alla Nazimova
2012Ci vediamo a casa as Madre di Enzo
2012Vorrei vederti ballare as Unknown
2011Il console italiano as Unknown
2010Francesco Nuti… e vengo da lontano as Self
2010Il peccato e la vergogna (10 Episodes) as Bigiù
2008Mogli a pezzi (4 Episodes) as Armida Casoni
2006Crimes (1 Episode) as Laura
2006L'onore e il rispetto (6 Episodes) as Concetta De Nicola
2006The Short Night as Lara
2005Caterina e le sue figlie (18 Episodes) as Concetta Melita 'Cetty' Saponero dal Puozzo
2004A luci spente as Elena Monti
2002Ti voglio bene Eugenio as Elena
2001Beauty Centre (36 Episodes) as Annalisa Bottelli Renzi Di Balsano
2000Mary Magdalene as Erodiade
1998Ciao Darwin (1 Episode) as Capitana Quarantenni
1998Angelo Nero as Iris
1997Der Kapitän (1 Episode) as Dr. Sophia Minardi
1996Italiani as Margherita
1994The True Life of Antonio H. as Unknown
1992Per non dimenticare as Unknown
1992Wolffs Revier (1 Episode) as Wanda Treptow
1992Centro storico as Sandra
1991The Wicked as Emilia
1990Feu sur le candidat as Alix/Clara
1988What if Gargiulo Finds Out? as Teresa Capece
1987Private Affairs as Nagra
1987I picari as Rosario, the prostitute
1986Let's Hope It's a Girl as Franca
1985Casablanca, Casablanca as Chiara
1984Uno scandalo perbene as Giulia Canella
1984Cuore (6 Episodes) as Maestrina dalla penna rossa
1984One Hundred Days in Palermo as Emanuela Setti Carraro
1984The Octopus (7 Episodes) as Giulia Antinari
1984Goldene Kamera Verleihung (1 Episode) as Self
1983The Pool Hustlers as Chiara
1983Sorry for the Delay as Anna
1982Chopin as Marta Vitale
1979Hypochondriac as Angelica
1979Rue du Pied de Grue as Luisa
1978Dirty Hands (3 Episodes) as Jessica
1976San Pasquale Baylonne, Protector of Women as Cesira
1948Bambi-Verleihung (1 Episode) as Self