It Runs in the Family

Charles Grodin

Mr. Parker (The Old Man)

Kieran Culkin

Ralph "Ralphie" Parker

Mary Steenburgen

Mrs. Parker (Mother)

Christian Culkin

Randy Parker

Al Mancini

Zudoc

Troy Evans

Gertz

Roy Brocksmith

Mr. Winchell, the Assessor

Glenn Shadix

Leopold Doppler

Dick O'Neill

Pulaski

Wayne Grace

Emil Bumpus

Tedde Moore

Miss Shields

Whit Hertford

Lug Ditka

Geoffrey Wigdor

Flick

David Zahorsky

Schwartz

Darwyn Swalve

Big Dickie Bumpus

Marilyn Pitzer

Ma Bumpus

Ida Lee

Grandma Bumpus

John Voldstad

Ace Bumpus

Frank Collison

Floyd Bumpus

Robert Dickman

Clovis Bumpus