Chevy Chase

Clark Griswold

Beverly D'Angelo

Ellen Griswold

Randy Quaid

Cousin Eddie

Ethan Embry

Rusty Griswold

Marisol Nichols

Audrey Griswold

Miriam Flynn

Cousin Catherine

Shae D'Lyn

Cousin Vicki

Wayne Newton

Wayne Newton

Siegfried Fischbacher

Siegfried

Roy Horn

Roy

Wallace Shawn

Marty

Sid Caesar

Mr. Ellis

Julio Oscar Mechoso

Limo Driver

Sly Smith

Mirage Security Guard

Julia Sweeney

Mirage Reception Person

Corinna Harney

Girl at Blackjack Table

Joe Armeno

Roulette Stickman

Christie Brinkley

Woman in Ferrari

Juliette Brewer

Cousin Ruby Sue

Zachariah Moyes

Cousin Denny

John Finnegan

Hoover Dam Guide

Seth T. Walker

Bellman

Howard Platt

Maitre'd

Elizabeth Illia

Woman at Concert

Wayne Brown

Croupier

Maria Cina

Mirage Cashier

Wendy Kaufman

Wendy

Joe Lacoco

Riviera Bartender

David L. Garoutte

Riviera Security Guard

C.C. Costigan

Kelli

Peter George

Marcus

Frank Mendonga

Kurt

Danny Lopez

Kyle

Shannah Laumeister Stern

Mariah

Aki

Aki

Bud Ekins

O'Shea's Security Guard

Gary Devaney

Croupier

Jerry Weintraub

Jilly

Bernie Yuman

Doc Sandy

Paul Kessler

Silent Al

S.A. Griffin

Pit Boss

Lou DiMaggio

Casino Host

Jason Stuart

Buffet Guy

Nick Mazzola

War Dealer

Ken Michelman

Pick a Number Dealer

Clinton Brandhagen

Valet

Rusty Meyers

Club Manager

Billy Morrissette

Paramedic

Larry Hankin

Preacher

Alana Austin

Tourist (uncredited)

Jeffrey Donovan

Hotel Employee (uncredited)

Toby Huss

Fake ID Salesman (uncredited)

Walter Ludwig

Tourist (uncredited)

Frank Patton III

Hustler (uncredited)

Bob Pepper

Jackpot Witness (uncredited)

Billie Perkins

Casino Guest (uncredited)

Jay So

High Roller (uncredited)