Marcia Gay Harden (born August 14, 1959) is an American film and theatre actress.

Harden’s breakthrough role was in Miller’s Crossing (1990) and then The First Wives Club (1996) which was followed by several roles which gained her wider fame including the comedy Flubber (1997) and Meet Joe Black (1998). She received an Academy Award for Best Supporting Actress for her role as Lee Krasner in Pollock (2000). She has starred in a string of successful mainstream and independent movies, such as Space Cowboys (2000), Into the Wild (2007), and The Mist (2007), for which she won the Saturn Award for Best Supporting Actress.