Zosia Mamet

Zosia Mamet ( ; born February 2, 1988) is an American actress and musician. She is known for her breakout role as Shoshanna Shapiro in the HBO series Girls.

Mamet also starred as Annie Mouradian in the HBO Max original series The Flight Attendant and Pampinea in the Netflix series The Decameron.

Early life Mamet is the daughter of American playwright, essayist, screenwriter, and film director David Mamet and actress Lindsay Crouse. Her father is the grandson of Polish Jews and she says her given name is Polish and Russian. Her maternal grandfather was playwright Russel Crouse and her maternal great-grandfather was educator John Erskine. She has a sister, Willa, who is a singer, and two half-siblings: Clara, also an actress and director; and Noah. She lived in New England until age five when her mother moved to Pacific Palisades, California, with Willa and Zosia. After finishing high school, Mamet decided to pursue acting instead of going to college.

Career In 2012, Mamet was cast by Judd Apatow in the HBO series Girls. She has subsequently appeared as a regular in television series such as The Flight Attendant, The Decameron, and Laid. In June of 2026, Mamet was announced to have a guest appearance in the upcoming season 2 of Adults.

Voice acting Mamet performed the audiobook The Feral Detective by author Jonathan Lethem. Mamet has also done voice-over work in Regular Show, High School USA!, Star vs. the Forces of Evil, and StuGo.

Music In 2012, alongside her half-sister Clara Mamet, launched a folk music duo project called The Cabin Sisters. In April, they played live in The Bowery Electric in New York City.

In 2014, Mamet formed an alternative rock band called Chacha, the band's name originating from a childhood nickname of Mamet's. In December, the band performed their first show in The Manderley Bar at The McKittrick Hotel to promote their new lead single "Too Good", off their upcoming EP, Lucy.

Personal life Mamet began dating actor Evan Jonigkeit in 2013. They married in October 2016.

At the 2017 Makers Conference, Mamet performed a monologue describing her experience of living with undiagnosed pelvic floor dysfunction for six years.

Filmography

Film

Television

Theatre Year Title Role Playwright Venue Ref. 2013 Really Really Leigh Paul Downs Colaizzo Lucille Lortel Theatre, Off-Broadway Uncle Vanya Sofia Anton Chekhov James Bridges Theater, Los Angeles Crimes of the Heart Babe Botrelle Beth Henley Acorn Theatre, Off-Broadway 2017 The Whirligig Trish Hamish Linklater Alice Griffin Jewel Box Theatre, Off-Broadway

Awards and nominations Year Association Category Project Result Ref. 2017 Online Film & Television Association Award Best Supporting Actress in a Comedy Series Girls 2021 Screen Actors Guild Award Outstanding Ensemble in a Comedy Series