Jon Heder as Napoleon Dynamite

Efren Ramirez as Pedro Sanchez

Tina Majorino as Deb

Aaron Ruell as Kip Dynamite

Jon Gries as Uncle Rico

Haylie Duff as Summer

Emily Kennard Dunn as Trisha

Shondrella Avery as LaFawnduh

Sandy Martin as Grandma

Diedrich Bader as Rex

Carmen Brady as Starla

Trevor Snarr as Don

Ellen Dubin as Ilene

Samantha Marsden as School Kid

J.C. Cunningham as Jock #1

James Smooth as Jock #2

Brian Petersen as Lance

Brent Taylor as Nathan

Tom Lefler as Principal Svadean

Elizabeth Miklavcic as Renae

Jamen Gunnell as Vern

Nanette Young as Corrina

Walter Platz as Cashier

Nano De Silva as Cholo #1

Arturo De Silva as Cholo #2

Pat Donahue as Farmer

Dale Critchlow as Lyle

Tom Adams as FFA Judge #1

Eldean Holliday as FFA Judge #2

Arlando Larsen as FFA Judge #3

Mari Molefe van Heerden as Teacher

T.J. Adams as Farm Boy #1

Jake Visser as Farm Boy #2

Brady Stokes as Farm Boy #3

Theodora Peeterborg as Secretary #1

Becky Demke as Secretary #2

Julia Ruell as Girl on Bike