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