We’ve heard their voices for more than 30 years, but would you recognize them on the street?

Julie Kavner

Julie Kavner voices Marge Simpson, Patty Bouvier, Selma Bouvier, and Jacqueline Bouvier.

Nancy Cartwright

Nancy Cartwright voicesBart Simpson, Nelson Muntz, and Ralph Wiggum.

The Simpsons

The Simpsons.Credit:FOX

Yeardley Smith

Yeardley Smithvoices Lisa Simpson and Grandma Flanders.

Tress MacNeille

Tress MacNeille voices Dolph, Agnes Skinner, the Crazy Cat Lady, and more.

Maggie Roswell

Maggie Roswell voices Helen Lovejoy, Maude Flanders, and Miss Hoover.

Dan Castellaneta Voices Homer Simpson, Barney Gumble, and Grampa Simpson

Kevin Winter/Getty Images; FOX

Grey DeLisle took over the roles in subsequent years.

Joe Mantegna

Joe Mantegnavoices Fat Tony.

Julie Kavner Voices Marge Simpson, Patty Bouvier, and Selma Bouvier

Cindy Ord/Getty Images; FOX

Nancy Cartwright Voices Bart Simpson, Nelson Muntz, and Ralph Wiggum

Chelsea Lauren/WireImage; FOX

Yeardley Smith Voices Lisa Simpson and Grandma Flanders

Mark Davis/Getty Images; FOX

Harry Shearer Voices Ned Flanders, Lenny, and Principal Skinner

Michael Kovac/WireImage; FOX

Hank Azaria’s Simpsons characters

Gregg DeGuire/Getty Images; FOX (3)

Pamela Hayden Voices Milhouse Van Houten, Jimbo Jones, and Rod Flanders

Jason Merritt/FilmMagic; FOX

Tress MacNeille Voices Dolph and Agnes Skinner

Michael Tullberg/Getty Images; FOX

Maggie Roswell Voices Helen Lovejoy, Maude Flanders, and Miss Hoover

Instagram.com/maggieroswell; FOX

Russi Taylor Voices Martin Prince, Sherri, and Terri

Gina Ferazzi/Los Angeles Times via Getty Images; FOX

Joe Mantegna Voices Fat Tony

Gabriel Olsen/FilmMagic; FOX