Casting Dumb & Dumber De
Dumb & Dumber De Dumb & Dumber De

Rôle : Penny

Rôle : Dr. Walcott
- Man at Gas Station Gregory Fears
- Billy Brady Bluhm
- Ms. Sourpuss Patricia French
- Dr. Pinchelow Steve Tom
- Dr. Meldman Don Lake
- Gordy Eddie Shin
- Gus Atkins Estimond
- Tom Tommy Snider
- Professor Garabedian Lindsay Ayliffe
- Inventor No. 1 Matthew Cardarople
- Ice Pick Bill Murray
- Mr. Stainer I Grant James
- Mrs. Steiner Taylor St. Clair
- Asylum Nurse No. 1 Erin Allin O'Reilly
- KEN Audience Member Walt Arnett
- Fanny at Age 13 Erika Bierman
- Fanny at Age 5 Kassidy Claire
- Young Fraida Carly Craig
- Dr. Dilbeck Bryan Dilbeck
- Young Harry Dalton E. Gray
- Audience Member Michael McCrudden
- Harry's Trailer Park Wife June Shannon
- Receptionist Maia Moss-Fife
- Convention Official Jeff Sumner
- KEN Conference Attendee Julius Sharpe
- KEN Conference Attendee Dave Walpole
- Inventor No. 2 Brett Wyman
- KEN Convention Employee (uncredited) Paul Bednarz
- Young Inventor (uncredited) Jennifer Cocker
- Mental Patient (uncredited) John Deifer
- Prom Attendee (uncredited) Abigail Gamache
- Prom Singer (uncredited) William Goodrum
- Street Patron (uncredited) Walter Hendrix III
- Waitress (uncredited) Angela Kerecz
- Neighbor (uncredited) John Merical
- Mrs. Julie James Elizabeth Cooper
- Harry's Dad Michael Yama
- Harry's Mom Nancy Yee
- Asylum Nurse #2 Nancy Byers Farrelly
- Asylum Patient Derek Holland
- Asylum Patient Brendan Boyle
- Ninja Leader Swizz Beatz
- Trucker Mike Cerrone
- Trucker's Pal Sean Gildea
- Fanny Age 5 Kassidy Claire
- Inventor #2 Brett Wyman
- Mrs. Snergle Jo Helton
- Fanny Age 13 Erika Bierman
- Nursing Home Orderly Edward Barbanell
- Farmer's Wife Mariann Neary
- Farmer John Imlay
- Inventor No. 3 Jon Barinholtz
- Bartender Lucas Daniels
- Bus Kid Carter Hicks
- Prom Date Baxter Cooper Rogers
- Stuffy Woman Sandra Dorsey
- Emergency Room Nurse Arielle Liberman
- Emergency Room Orderly Jon Barry
- Emergency Room Orderly Jesse Gines
- Emergency Medical Technician #1 Robin O'Neal Sorensen
- Emergency Medical Technician #2 Chris Randall Sorensen
- Wheelchair Ninja Daniel Greene
- Room Service Waiter Will Coogan
- Trailer Grandma Caryle Seim
- Joystick Victim Danny Murphy
- Bus Driver Rhomyen Johnson
Réalisateurs Dumb & Dumber De
Scénaristes Dumb & Dumber De

Rôle : Scénaristes

Rôle : Scénaristes
Producteurs Dumb & Dumber De

Rôle : Producteurs