Drop-Out Father

Dick Van Dyke

as Ed McCall

Mariette Hartley

as Katherine McCall

George Coe

as Kannon Rush

William Daniels

as Draper Wright

Monte Markham

as Tony Malgrado

Arthur Rosenberg

as Marty Zimmerman

George Wyner

as Dr. Irving Lefkowitz

Claudia Lonow

as Peggy McCall

Charles Bloom

as David McCall

Michael Cummings

as Bud McCall

Rhea Perlman

as Tawney Shapiro

Jeff Altman

as Harry

Bill Erwin

as Grandpa

Terri Berland

as Stewardess

Marianne McAndrew

as Diane

Ernie Lively

as Conductor

Susan Ruttan

as Woman Prude

Shannon Tweed

as Beautiful Woman

Ray Singer

as Doug

Jacques Aubuchon

as Dr. Simon

Sivi Aberg

as Housekeeper

Israel Juarbe

as Jose