Famous 'Law & Order: SVU' guest stars, then and now
USA TODAY
Nov. 12, 2020Updated Oct. 21, 2021, 2:04 p.m. ET
"Law & Order: Special Victims Unit" debuted Sept. 20, 1999, and aired its 500th episode Oct. 21.
Plenty of well-known actors have made appearances on the NBC detective drama. Scroll through for some of the many famous faces who had acting gigs on the long-running series, a spin-off of the original "Law & Order" that will return in 2022.
NBC, Barbara Nitke/NBCPlenty of well-known actors have made appearances on the NBC detective drama. Scroll through for some of the many famous faces who had acting gigs on the long-running series, a spin-off of the original "Law & Order" that will return in 2022.

Bradley Cooper played attorney Jason Whitaker and Angela Lansbury played Eleanor Duvall in a 2005 episode titled "Night."
Virginia Sherwood/NBC
Then known for his role on "Alias," Cooper would go on to star in comedies such as "The Hangover" before nabbing Oscar nominations for "Silver Linings Playbook," "American Hustle," "American Sniper" and "A Star is Born."
Dan MacMedan, USA TODAYMischa Barton, who broke out with her role on the 2000s drama "The O.C.," guest-starred on a 2010 episode of "SVU" as Gladys Dalton.
Gregg DeGuire, FilmMagicFormer teen pop star Jesse McCartney scored a guest role on the crime drama in 2008, playing the role of Max Matarazzo.
Jordan Strauss, InvisionMcCartney recently appeared on the reality television series "The Masked Singer" as Turtle.
Theo Wargo, Getty Images
A 10-year-old Sarah Hyland played Lily Ramsey in a 2001 episode.
Eric Liebowitz/NBCU Photo BankHyland would go on to star as ditzy teen Haley Dunphy in ABC's longrunning sitcom "Modern Family," which ended in 2020 after 11 seasons.
Frazer Harrison, Getty Images
Scott Foley appeared on the show as Dalton Rindell in 2009.
Mike Coppola, Getty ImagesSince SVU, Foley has scored roles on other shows, such as "Grey's Anatomy," "True Blood" and "Scandal."
Jason LaVeris, FilmMagicIn 2014, Alec Baldwin (right) made an appearance as Jimmy MacArthur, a Pulitzer Prize-winning journalist.
Michael Parmelee, NBCThe actor played President Donald Trump on "Saturday Night Live."
Will Heath/NBC
Ariel Winter appeared as Raegan James in a 2019 episode titled "The Darkest Journey Home."
Barbara Nitke/NBC
She played Hyland's younger, brainy sister Alex Dunphy on ABC's "Modern Family."
Eric McCandless, ABC
Perez appeared in the DC Comics-based adventure comedy "Birds of Prey" and is set to appear in the upcoming live adaptation of "Clifford the Big Red Dog."
Chris Pizzello, Chris Pizzello/Invision/APCarol Burnett played serial killer Bridget "Bridie" Sulloway in a 2009 episode, "Ballerina."
Will Hart, NBCThe comedian is best known for her 1970s CBS variety show, "The Carol Burnett Show."
Dan MacMedan/USA TODAY
Leslie Odom Jr. (left) played Reverend Curtis Scott in a handful of episodes from 2013 to 2015.
Craig Blankenhorn/NBC
A few months before his final "SVU" episode aired, Odom (left) began starring as Aaron Burr in the groundbreaking Broadway musical "Hamilton" alongside Lin-Manuel Miranda (right).
DISNEY+In 2009, Hilary Duff played Ashlee Walker, a mother who pleaded guilty after not vaccinating her daughter, who died of measles.
Will Hart, NBC
Duff, who got her start on the Disney Channel show "Lizzie McGuire," has most recently appeared on "Younger."
Frazer Harrison, Getty ImagesJonathan Bennett played Kyle Fuller on a 2002 episode of SVU.
Michael Buckner, Getty ImagesBennett went on to star in the 2004 teen comedy "Mean Girls," alongside Lindsay Lohan, Rachel McAdams and Lacey Chabert.
MICHAEL TRAN, AFP Via Getty ImagesKathy Griffin played Babs Duffy in a 2010 episode titled "P.C."
Will Hart, NBCGriffin is a stand-up comedian who frequently appears on TV shows.
Ethan Miller, Getty ImagesElle Fanning appeared on a 2006 episode of the show.
Samir Hussein, WireImageFanning went on to score a starring role in Disney's "Maleficent" and its 2019 sequel, "Maleficent: Mistress of Evil," playing Aurora opposite Angelina Jolie's Maleficent.
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