Lily Gladstone (born August 2, 1986) is an American actress. She made her film debut in Jimmy P: Psychotherapy of a Plains Indian (2012), and collaborated with filmmaker Kelly Reichardt in the independent films Certain Women (2016) and First Cow (2019). She also appeared in episodes of HBO's Room 104 (2017–2020), Showtime's Billions (2016–2023), and FX's Reservation Dogs (2021–2023).

Gladstone earned critical acclaim for playing Mollie Kyle in Martin Scorsese's crime drama film Killers of the Flower Moon (2023), receiving several accolades. She became the first Native American to win the Golden Globe Award for Best Actress in a Motion Picture – Drama and the first to receive a nomination for the Academy Award for Best Actress.