The Butterfly Effect

Ashton Kutcher

Evan Treborn

Amy Smart

Kayleigh Miller

Melora Walters

Andrea Treborn

Elden Henson

Lenny Kagan

William Lee Scott

Tommy Miller

Eric Stoltz

George Miller

Ethan Suplee

Thumper

Logan Lerman

Evan Treborn age 7

John Patrick Amedori

Evan Treborn age 13

Irina Gorovaia

Kayleigh age 13

Kevin G. Schmidt

Lenny age 13

Jesse James

Tommy age 13

Nathaniel DeVeaux

Dr. Redfield

Kevin Durand

Carlos

Callum Keith Rennie

Jason Treborn

Cameron Bright

Tommy age 7

Lorena Gale

Mrs. Boswell

Kendall Cross

Mrs. Kagan

John Tierney

Priest

Ted Friend

Anchor

John B. Lowe

Professor Carter

Camille Sullivan

Cricket

Tara Wilson

Heidi

Jesse Hutch

Spencer

Bill Croft

Boss

Kevan Ohtsji

Anesthesiologist

Daniel Spink

Senior Brother

Grant Thompson

Hunter

Melanie Hall

Gesela

Sam Easton

Frat Boy Pledge

Jake Kaese

Lenny at 7

Sarah Widdows

Kayleigh at 7

Bret Aaron Knower

Eugenie

Amy Esterle

Gothic Co-Ed

Jacqueline Stewart

Gwen

Glenn Richards

Pinching Customer

Sadie Lawrence

Mrs. Halpern

Sam Easton

Theta Chi Pledge

Douglas Arthurs

Karl

Paul Lazenby

Rick

June B. Wilde

Waitress

Kimani Ray Smith

Orderly

Trevor Jones

Sunnyvale Guard

Colby Chartrand

Teen Punk

Shelly Schiavoni

Mrs. Miller

Brandy Kopp

Kristen

Chapelle Jaffe

Madame Helga

Scott Swanson

Obstetrician

David Cook

Moviegoer

Magda Apanowicz

Teen Punk Girl

Garry Little

Wedding Priest

David Dasilma

Theta Chi Pledge #2 (uncredited)

Stan Edmonds

Crying Mental Patient (uncredited)

Cameron K. Smith

Theater Patron (uncredited)

J. Jackson Kocela

Evan at 3

Andrew Olcott

Andrea's New Husband