Shirley MacLaine (born Shirley MacLean Beaty, April 24, 1934) is an American actress, author and former dancer. Known for her portrayals of quirky, strong-willed and eccentric women, she has received numerous accolades over her seven-decade career, including an Academy Award, an Emmy Award, two BAFTA Awards, six Golden Globe Awards, two Volpi Cups and two Silver Bears. She has been honored with the Film Society of Lincoln Center Tribute in 1995, the Cecil B. DeMille Award in 1998, the AFI Life Achievement Award in 2012, and the Kennedy Center Honor in 2013.

Born in Richmond, Virginia, MacLaine made her acting debut as a teenager with minor roles in the Broadway musicals Oklahoma! and The Pajama Game. She made her film debut with Alfred Hitchcock's black comedy The Trouble with Harry (1955), winning the Golden Globe Award for New Star of the Year – Actress. She rose to prominence with starring roles in Around the World in 80 Days (1956), Some Came Running (1958), Ask Any Girl (1959), The Apartment (1960), The Children's Hour (1961), Irma la Douce (1963), and Sweet Charity (1969).

A six-time Academy Award nominee, MacLaine won the Academy Award for Best Actress for the comedy-drama Terms of Endearment (1983). Her other prominent films include The Turning Point (1977), Being There (1979), Madame Sousatzka (1988), Steel Magnolias (1989), Postcards from the Edge (1990), In Her Shoes (2005), Bernie (2011), The Secret Life of Walter Mitty (2013), Elsa & Fred (2014), and Noelle (2019).

MacLaine starred in the sitcom Shirley's World (1971–1972) and played the eponymous fashion designer in the biopic television film Coco Chanel (2008), receiving nominations for a Primetime Emmy Award, a Screen Actors Guild Award, and a Golden Globe Award for the latter. She also made appearances in various television series, including Downton Abbey (2012–2013), Glee (2014), and Only Murders in the Building (2022). MacLaine has written numerous books regarding the subjects of metaphysics, spirituality, and reincarnation, as well as a best-selling memoir, Out on a Limb (1983).