She received Emmy and Golden Globe nominations for her title role as a struggling single mother in the Netflix miniseries Maid (2021).

Sarah Margaret Qualley (born October 23, 1994) is an American actress and former ballet dancer. The daughter of actress Andie MacDowell, she gained recognition playing Jill Garvey in HBO's The Leftovers (2014-2017) after debuting in Palo Alto (2013). She earned Emmy nominations for Fosse/Verdon (2019) and Maid (2021), and received Golden Globe nominations for Maid and The Substance (2024).

Qualley trained as a ballet dancer from age 14 at the North Carolina School of the Arts, earning an apprenticeship at the American Ballet Theatre and studying at New York's Professional Children's School. At 16, she quit ballet after receiving an offer from the North Carolina Dance Theater company, choosing instead to pursue modeling and then acting. She attended the Royal Academy of Dramatic Art summer program in London and briefly studied at New York University before leaving for acting roles.

Qualley married music producer Jack Antonoff in August 2023 after they began dating in 2022. Her mother is actress and model Andie MacDowell, and her father is former model and rancher Paul Qualley, who separated when Margaret was five. She has an older brother Justin and an older sister, actress and singer Rainey Qualley, and the family has Scottish ancestry through their mother.