西席·斯贝西克（Sissy Spacek，1949年12月25日－) 是一位美国女演员和歌手。曾经先后获得了奥斯卡奖的6次提名，一次得奖。

斯贝西克出生于美国德克萨斯州，拥有捷克，德国，英国和爱尔兰血统。高中毕业后，来到纽约发展，开始歌唱生涯。 斯贝西克与设计师Jack Fisk于1974年结婚，有两个女儿。

Mary Elizabeth "Sissy" Spacek (/ˈspeɪsɛk/; born December 25, 1949) is an American actress, singer and model. She began her career in the early 1970s and first gained attention for her role in the film Badlands (1973). Her career-defining role came in 1976 when she played the title character of Carrie White in Brian De Palma's horror film Carrie, based on the first novel by Stephen King, for which she earned an Oscar nomination. She won the Academy Award for Best Actress for her portrayal of Loretta Lynn in the 1980 film Coal Miner's Daughter, and also earned a Grammy nomination for the song "Coal Miner's Daughter" from the film's soundtrack. She went on to receive further Oscar nominations for her roles in Missing (1982), The River (1984) and Crimes of the Heart (1986). Coal Miner's Daughter and Crimes of the Heart also won her the Golden Globe Award for Best Actress in a Musical or Comedy.