Stephanie Ann Hsu (born November 25, 1990) is an American actress.

She trained at NYU Tisch School of the Arts and began her career in experimental theatre before starring on Broadway, originating the roles of Christine Canigula in Be More Chill (2015–2019) and Karen the Computer in SpongeBob SquarePants: The Broadway Musical (2016–2017). In television, she is known for her recurring roles in The Marvelous Mrs. Maisel (2019–2023) and Awkwafina Is Nora from Queens (2020–2021). Hsu received critical acclaim and a nomination for the Academy Award for Best Supporting Actress for her dual role as Joy Wang and Jobu Tupaki in the film Everything Everywhere All at Once (2022). Her performance also garnered her nominations for a Golden Globe Award, a SAG Award and a Critics’ Choice Movie Award.

Other notable film and television credits include supporting roles in The Marvelous Mrs. Maisel (2017-2023), Set It Up (2018), Shang-Chi and the Legend of the Ten Rings (2021), Poker Face (2023), Shortcomings (2023), American Born Chinese (2023), Joy Ride (2023), The Monkey King (2023), Leo (2023), and The Fall Guy (2024).