Jessica Michelle Chastain (born March 24, 1977) is an American actress and film producer. Known for her roles in films with feminist themes, she has received various accolades, including an Academy Award, a Golden Globe Award, in addition to nominations for two British Academy Film Awards. Time magazine named her one of the 100 most influential people in the world in 2012.

Born and raised in Sacramento, California, Chastain developed an interest in acting from an early age. In 1998, she made her professional stage debut as Shakespeare's Juliet. After studying acting at the Juilliard School, she was signed to a talent holding deal with the television producer John Wells. She was a recurring guest star in several television series, including Law & Order: Trial by Jury. She also took on roles in the stage productions of Anton Chekhov's play The Cherry Orchard in 2004 and Oscar Wilde's tragedy Salome in 2006.