Samantha Jane Morton (born May 13, 1977) is an English actress. She is known for her work in independent films with dark and tragic themes, in particular period dramas. She has received numerous accolades, including the BAFTA Fellowship, a BAFTA Award, a Golden Globe Award, and nominations for two Academy Awards, a Primetime Emmy Award, and a Screen Actors Guild Award.

Morton was a member of the Central Junior Television Workshop in her native Nottingham and began her career in British television in 1991. She appeared in the ITV series Band of Gold (1995–1996) and the BBC miniseries The History of Tom Jones: a Foundling (1997). Morton's early film roles include Emma (1996), Jane Eyre (1997), and Under the Skin (1997). She received two Academy Award nominations, one for Best Supporting Actress for Woody Allen's Sweet and Lowdown(1999) and the other for Best Actress for Jim Sheridan's In America (2003). Other notable film credits include  Morvern Callar (2002),  Minority Report (2002), The Libertine (2004), Control(2007), Elizabeth: The Golden Age (2007), Synecdoche, New York (2008), The Messenger (2009), John Carter (2012), Fantastic Beasts and Where to Find Them (2016), and The Whale (2022).