Elizabeth Chase Olsen (born February 16, 1989) is an American actress. She gained worldwide recognition for her portrayal of Wanda Maximoff / Scarlet Witch in the Marvel Cinematic Universe media franchise, including in Avengers: Age of Ultron (2015), Doctor Strange in the Multiverse of Madness (2022), and the miniseries WandaVision (2021). Her performance in the latter earned her nominations for a Primetime Emmy Award, a Golden Globe Award and a Critics’ Choice Television Award.

Born in Sherman Oaks, California, Olsen began acting at the age of four alongside her sisters, Mary-Kate and Ashley Olsen. She had her debut film role in the 2011 thriller Martha Marcy May Marlene, for which she received praise. Olsen received a BAFTA Rising Star Award nomination and graduated from New York University two years later.

Outside of her work with Marvel, Olsen starred in the monster film Godzilla (2014), the mystery film Wind River (2017), the dramedy Ingrid Goes West (2017), the family drama His Three Daughters (2024), the sci-fi thriller The Assessment (2025) and the romantic comedy Eternity (2025). She also starred as a widow in the drama series Sorry for Your Loss (2018–2019) and as Candy Montgomery in the miniseries Love & Death (2023), with the latter earning her another nomination for a Golden Globe Award.