Julia Roberts as Erin Brockovich

Albert Finney as Ed Masry

Aaron Eckhart as George

Marg Helgenberger as Donna Jensen

Cherry Jones as Pamela Duncan

Veanne Cox as Theresa Dallavale

Conchata Ferrell as Brenda

Tracey Walter as Charles Embry

Peter Coyote as Kurt Potter

Michael Harney as Pete Jensen

Scarlett Pomers as Shanna Jensen

Scotty Leavenworth as Matthew Brown

Gina Gallego as Ms. Sanchez

T.J. Thyne as David Foil (1st PG&E Rep)

Valente Rodriguez as Donald

Erin Brockovich as Waitress

David Brisbin as Dr. Jaffe

Dawn Didawick as Rosalind

George Rocky Sullivan as Los Angeles Judge

Pat Skipper as Defending Lawyer

Jack Gill as Defendant

Irene Olga López as Mrs. Morales

Emily Marks as Beth (8 months)

Julie Marks as Beth (8 months)

Gemmenne de la Peña as Katie

Adilah Barnes as Anna

Irina V. Passmoore as Babysitter

Ron Altomare as Biker Friend

Charles John Bukey as Biker Friend

Randy Lowell as Brian Frankel

Jamie Harrold as Scott

Sarah Ashley as Ashley Jensen

Joe Chrest as Tom Robinson

Meredith Zinner as Mandy Robinson

William Lucking as Bob Linwood

Mimi Kennedy as Laura Ambrosino

Scott Sowers as Mike Ambrosino

Kristina Malota as Annabelle Daniels

Wade Williams as Ted Daniels

Cordelia Richards as Rita Daniels

Ashley Pimental as Beth (18 months)

Brittany Pimental as Beth (18 months)

Larry Martinez as Nelson Perez

LeRoy A. Simmons as Self

Don Snell as PG&E Lawyer

Michael Shamberg as PG&E Lawyer

Ronald E. Hairston as Car Messenger

Scott Allen as Town Meeting Plaintiff

Sheila Shaw as Ruth Linwood

Matthew Kimbrough as Bartender

Jason Cervantes as Check Messenger

Spencer Kayden as Tearful Courtroom Spectator (uncredited)

Norma Maldonado as Woman #1 (uncredited)

Mike Malone as Baxter (uncredited)

Tom Tangen as Ned (uncredited)

Julie Wagner as E.R. Admitting Nurse (uncredited)