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)