Clark Griswold

Chevy Chase

Ellen Griswold

Beverly D'Angelo

Cousin Eddie

Randy Quaid

Russell "R'usty" Griswold

Ethan Embry

Audrey Griswold

Marisol Nichols

Cousin Catherine

Miriam Flynn

Cousin Vicki

Shae D'Lyn

Wayne Newton

Wayne Newton

Marty

Wallace Shawn

Siegfried

Siegfried Fischbacher

Mr. Ellis

Sid Caesar

Limo Driver

Julio Oscar Mechoso

Roy

Roy Horn

Mirage Security Guard

Sly Smith

Girl at Blackjack Table

Corinna Harney

Mirage Reception Person

Julia Sweeney

Woman in Ferrari

Christie Brinkley

Cousin Ruby Sue

Juliette Brewer

Jilly

Jerry Weintraub

Preacher

Larry Hankin

Cousin Denny

Zachariah Moyes

Mariah

Shannah Laumeister Stern

Roulette Stickman

Joe Armeno

Kelli

C.C. Costigan

Wendy

Wendy Kaufman

Cousin Danny

Zach Myers

Hoover Dam Guide

John Finnegan

Preacher

Larry Hankin*

Girl in Hot Tub

Hayley Mortison

Casino Guest (uncredited)

Billie Perkins

Hot Pool Model (uncredited)

Vanessa Bednar

Tourist (uncredited)

Alana Austin

Hotel Employee (uncredited)

Jeffrey Donovan

D.B. Sweeney

Bellman

Seth T. Walker

Maitre'd

Howard Platt

Mirage Cashier

Maria Cina

Riviera Bartender

Joe Lacoco

Bud Ekins

Director

Stephen Kessler