Mark Ruffalo
Robert Bilott

Anne Hathaway
Sarah Bilott

Tim Robbins
Tom Terp

Bill Pullman
Harry Dietzler

Bill Camp
Wilbur Tennant

Victor Garber
Phil Donnelly

Mare Winningham
Darlene Kiger

William Jackson Harper
James Ross

Louisa Krause
Carla Pfeiffer

Kevin Crowley
Larry Winter

Denise Dal Vera
Sandra Tennant

Abi Van Andel
Kathleen Welch

John Newberg
Dr. Gillespie

Jeffrey Grover
Edward Wallace

Brian Gallagher
David

Michael Haney
Managing Partner

Michael King
Unpleasant Partner

Greg Violand
Union Carbide Lawyer

Michael Joseph Thomas Ward
DOW Lawyer

Bella Falcone
Crystal Tennant (11-13)

Scarlett Hicks
Amy Tennant

Amy Morse
Tom's Secretary

Amy Warner
Sarah's Mother

Linnea Bond
Clerk

Courtney DeCosky
All-American Mom

Kelly Mengelkoch
Dr. Mary-Sue Kimball

Annie Fitzpatrick
Judge

Wynn Reichert
Mediator

Mike Seely
Dr. Brooks

Teri Clark
Neurologist

Chaney Morrow
Young Farmer

Jon Osbeck
Sarah's Brother

Clyde Tyrone Harper
Judge #2

Lisa DeRoberts
Young Mother

Jennie Malone
Guitar Player / Singer

Sydney Miles
Laura Doggett

Trent Rowland
Tall Boy

Geoff Falk
Worker #1

Elizabeth Marvel
Dr. Karen Frank (voice)

Caleb Dwayne Tucker
Parkersburg Resident (uncredited)

Lea Hutton Beasmore
EPA / Dinner Guest (uncredited)

Anita Farmer Bergman
EPA Agent (uncredited)

Lyman Chen
Hack Scientist (uncredited)

Daniel R. Hill
DuPont Security Guard (uncredited)

Matt Hudson
Police Officer (uncredited)

Angel Kerns
Parkersburg Resident (uncredited)

Bret Aaron Knower
EPA (uncredited)

Joanne Popolin
EPA Lawyer / Taft Lawyer (uncredited)

Ramona Schwalbach
Plantiff's Family (uncredited)

Carly Tamborski
EPA Hearing Attendee / Church Parishioner (uncredited)

Derek Polen
Taft Lawyer (uncredited)

John E. Brownlee
Taft Lawyer (uncredited)

Jenny McManus
Protester (uncredited)