Jamie Lee Haden-Guest, Baroness Haden-Guest (née Curtis; born November 22, 1958), commonly known as Jamie Lee Curtis, is an American actress and author. She made her film debut in 1978 by starring as Laurie Strode in John Carpenter's Halloween (1978). A big hit, the film established her as a notable actress in horror, and she subsequently starred in Halloween II (1981), The Fog (1980), Prom Night (1980), Terror Train (1980), and Roadgames (1981), gaining the status of "scream queen" to mainstream audiences. Curtis has since compiled a body of work that spans many film genres, including the cult comedy films Trading Places (1983), for which she won a BAFTA Award for Best Actress in a Supporting Role, A Fish Called Wanda (1988), and True Lies (1994), for which she won a Golden Globe Award for Best Actress – Motion Picture Musical or Comedy.

Curtis's other notable films include Blue Steel (1989) and Freaky Friday (2003), earning a third Golden Globe nomination for Best Actress for the latter. For her role in the television series Anything But Love (1989–1992), she won the Golden Globe Award for Best Actress – Television Series Musical or Comedy. Curtis received her first Primetime Emmy Award nomination for Outstanding Lead Actress – Miniseries or a Movie for her performance in the television film Nicholas' Gift (1998). She also starred in the comedy horror series Scream Queens (2015–2016), for which she received her sixth Golden Globe nomination. Curtis is set reprise her iconic role of Laurie Strode in the horror sequel film Halloween (2018).

Curtis is the daughter of the actress Janet Leigh and actor Tony Curtis. She is married to actor, screenwriter, and director Christopher Guest. She has written numerous acclaimed children's books, with her 1998 release Today I Feel Silly, and Other Moods That Make My Day making the best-seller list in The New York Times. She has also appeared in advertisements and is a frequent blogger for The Huffington Post.