Maude Annabelle Apatow (born December 15, 1997) is an American actress. She is best known for portraying Lexi Howard in the HBO drama series Euphoria (2019–present).

The elder daughter of filmmaker Judd Apatow and actress Leslie Mann, Apatow began her career as a child actress playing the daughter of her mother's characters in her father's films Knocked Up (2007), Funny People (2009), and This Is 40 (2012). Later film roles have included Assassination Nation (2018) and The King of Staten Island (2020), as well as the Netflix miniseries Hollywood (2020).

Early life and education
Apatow's mother is actress Leslie Mann and her father is director, producer, and screenwriter Judd Apatow. Her father's family is Jewish, whereas her maternal great-grandmother was of Finnish ancestry. She has a younger sister, Iris Apatow, who is also an actress. She attended the Crossroads School, a private school in Santa Monica, California. Maude also attended Interlochen Arts Camp in Interlochen, Michigan. In high school, Apatow appeared in musicals such as Cabaret and Into the Woods. She studied theatre at Northwestern University in Evanston, Illinois, but dropped out after her sophomore year.