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Zosia Mamet ( ZOSH-ə MAAM-it; born February 2, 1988) is an American actress. 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.
| Year | Title | Role | Notes |
| 1997 | Colin Fitz Lives! | Lost Fan | |
| 2004 | Spartan | Bedouin Woman | |
| 2009 | Half Truth | Girl | Short film |
| Off the Ledge | Jenny | ||
| 2010 | The Kids Are All Right | Sasha | |
| Cherry | Darcy | ||
| Greenberg | Girl at Party | ||
| 2011 | Snuggle Bunny: Man's Most Lovable Predator | The Daughter | Short film |
| 2012 | Sunset Stories | Bethany | |
| Rhymes with Banana | Z | ||
| 2013 | The Last Keepers | Rhea Carver | |
| 2015 | Bleeding Heart | Shiva | |
| 2016 | Wiener-Dog | Zoe | |
| Mildred & The Dying Parlor | Mildred | Short film | |
| Dominion | Penny | ||
| Goldbricks in Bloom | Cleo | ||
| 2017 | The Boy Downstairs | Diana | |
| 2018 | Under the Silver Lake | Troy | |
| 2022 | Alone Together | Margaret | |
| 2023 | Molli and Max in the Future | Molli | |
| Trolls Band Together | Crimp (voice) | ||
| 2024 | Madame Web | Amaria | |
| 2025 | Fantasy Life | Jenny | |
| TBA | Artificial | TBA | Filming |
| Year | Title | Role | Notes |
| 1994 | Parallel Lives | Shannon | Television film |
| 2006–2007 | The Unit | Christine Ross | 5 episodes |
| 2009 | Ab Fab | Saffron | Television film |
| 2009 | War Wolves | Rudy | Television film |
| 2010 | United States of Tara | Courtney | 7 episodes |
| 2010 | Miss USA's Sexy Halloween | Beatrice | Video short |
| 2010–2011 | Parenthood | Kelsey | 5 episodes |
| 2010–2012 | Mad Men | Joyce Ramsay | 5 episodes |
| 2012–2017 | Girls | Shoshanna Shapiro | Main role; 48 episodes |
| 2013 | High School USA! | Amber Lamber (voice) | Main role |
| 2014–2015 | Regular Show | Celia (voice) | 2 episodes |
| 2014 | Back to Backspace | Yaga (voice) | Television pilot |
| 2015 | American Dad! | Mary (voice) | Episode: "My Affair Lady" |
| 2016 | Once Upon a Sesame Street Christmas | Bella | HBO special |
| 2016, 2018 | Unbreakable Kimmy Schmidt | Sue Thompstein | 2 episodes |
| 2016–2019 | Star vs. the Forces of Evil | Hekapoo (voice) | 18 episodes |
| 2017 | You're the Worst | Heidi Rasmullen | Episode: "Not a Great Bet" |
| 2019 | Tales of the City | Claire Duncan | Recurring role; 6 episodes |
| 2019 | Stumptown | Kaytlin / Kendra / Katrina | Episode: "Missed Connections" |
| 2019–2021 | Dickinson | Louisa May Alcott | 2 episodes |
| 2020–2022 | The Flight Attendant | Annie Mouradian | Main role; 16 episodes |
| 2021 | The Other Two | Herself | Episode: "Chase Goes to College" |
| 2023 | Ten Year Old Tom | Greenpeace Lisa (voice) | 3 episodes |
| 2023 | Harley Quinn | Princess Ladyfingers (voice) | Episode: "The Most Culturally Impactful Film Franchise of All Time" |
| 2024 | The Decameron | Pampinea | 8 episodes |
| 2024 | Laid | AJ | Main role |
| 2025 | StuGo | Merian (voice) | Main role |
| Year | Title | Role | Playwright | Venue | Ref. |
| 2013 | Really Really | Leigh | Paul Downs Colaizzo | Lucille Lortel Theatre, Off-Broadway | |
| 2013 | Uncle Vanya | Sofia | Anton Chekhov | James Bridges Theater, Los Angeles | |
| 2013 | 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 |
| Year | Association | Category | Project | Result | Ref. |
| 2017 | Online Film & Television Association Award | Best Supporting Actress in a Comedy Series | Girls | Nominated | |
| 2021 | Screen Actors Guild Award | Outstanding Ensemble in a Comedy Series | The Flight Attendant | Nominated |