Julia Scarlett Elizabeth Louis-Dreyfus (born January 13, 1961) is an American actress, comedian, and producer. She is known for her work on the comedy television series Saturday Night Live (1982–1985), as well as her roles on Seinfeld (1989–1998), The New Adventures of Old Christine (2006–2010), and Veep (2012–2019). She is one of the most award-winning actresses in American television history, having received more Primetime Emmy Awards and more Screen Actors Guild Awards than any other performer, tying Cloris Leachman (with eight) for the most acting wins.

She broke into comedy as a performer in The Practical Theatre Company in Chicago, Illinois, which led to her casting in the sketch show Saturday Night Live from 1982 to 1985. Her breakthrough came in 1990 with a nine-season run playing Elaine Benes on Seinfeld, one of the most critically and commercially successful sitcoms of all time. Her other television roles include Christine Campbell in The New Adventures of Old Christine, which had a five-season run on CBS; and Selina Meyer in Veep, which ran for seven seasons on HBO. Her film roles include Hannah and Her Sisters (1986), National Lampoon's Christmas Vacation (1989), Deconstructing Harry (1997), and Enough Said (2013). She also provided voices for the animated films A Bug's Life (1998), Planes (2013), and Onward (2020). In 2021, she began portraying Valentina Allegra de Fontaine in the Marvel Cinematic Universe.

She has received eleven Emmy Awards, eight for acting and three for producing. She has also received a Golden Globe Award, nine Screen Actors Guild Awards, five American Comedy Awards, and two Critics' Choice Television Awards. Louis-Dreyfus received a star on the Hollywood Walk of Fame in 2010 and was inducted into the Television Academy Hall of Fame in 2014. In 2016, Lena Dunham in Time named Louis-Dreyfus as one of the 100 most influential people in the world in the artists category in the annual Time 100 list. In 2018, she received the Mark Twain Prize for American Humor, presented by the Kennedy Center as America's highest comedy honor.

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