Jamie Lee Curtis (born November 22, 1958) is an American actress, producer, and children's author. Known for her performances in the horror and slasher genres, she is regarded as a scream queen, in addition to roles in comedies. She has received multiple accolades, including an Academy Award, a BAFTA, two Golden Globes, and two Screen Actors Guild Awards, as well as nominations for an Emmy and a Grammy.

She came to prominence with the ABC sitcom Operation Petticoat (1977–1978). She made her feature film debut playing Laurie Strode in John Carpenter's slasher film Halloween (1978), which established her as a scream queen and led to a string of parts in horror films such as The Fog, Prom Night, Terror Train (all 1980), and Roadgames (1981). She reprised the role of Laurie in the Halloween franchise, until 2022.

Her film work spans many genres outside of horror, including the comedies Trading Places (1983), for which she won a BAFTA for Best Supporting Actress, and A Fish Called Wanda (1988), for which she received a nomination for the BAFTA for Best Actress. Her role as a workout instructor in the film Perfect (1985) earned her a reputation as a sex symbol. She won a Golden Globe Award for her portrayal of Helen Tasker in James Cameron's True Lies (1994). Her other notable film credits include Freaky Friday (2003) and Knives Out (2019). Her performance in Everything Everywhere All at Once (2022) won her the Academy Award for Best Supporting Actress. She received a star on the Hollywood Walk of Fame in 1998. As of 2021, her films have grossed over $2.3 billion at the box office.

She received a Golden Globe and a People's Choice Award for her portrayal of Hannah Miller on ABC's Anything But Love (1989–1992), and earned a Primetime Emmy nomination for the television film Nicholas' Gift (1998). She also starred as Cathy Munsch on the Fox series Scream Queens (2015–16), for which she received her seventh Golden Globe nomination.

She has written numerous children's books, including Today I Feel Silly, and Other Moods That Make My Day (1998), which made The New York Times's best-seller list.

She is a daughter of actors Janet Leigh and Tony Curtis. She is married to British-American filmmaker Christopher Guest, with whom she has two adopted children. Her marriage to Guest, who holds the British title of 5th Baron Haden-Guest, makes her a baroness who is entitled to use the name "The Right Honourable The Lady Haden-Guest", though she opts not to use it.