Clark Griswold
Ellen Griswold
Audrey Griswold
Russell 'Rusty' Griswold
Clark, Sr.
Nora
Art
Francis
Cousin Eddie
Cousin Catherine
Rocky
Ruby Sue
Uncle Lewis
Aunt Bethany
Bill
Todd Chester
Margo Chester
Mary
Delivery Boy
Frank Shirley
Helen Shirley
Bozo #1
Bozo #2
SWAT Officer
Cop
Cop
Young Executive
Parade Announcer (voice)
Clark (age 9) (uncredited)
SWAT Team Sargeant (uncredited)
Downtown Shopper (uncredited)