Hal Sutherland Director Milton Berle The Cowardly Lion Voice Herschel Bernardi Woodenhead Pinto Stallion III Voice Paul Ford Uncle Henry Voice Margaret Hamilton Aunt Em Voice Jack E. Leonard The Signpost Voice Paul Lynde Pumpkinhead Voice Ethel Merman Mombi, the Bad Witch Voice Liza Minnelli Dorothy Voice Mickey Rooney The Scarecrow Voice Rise Stevens Glinda, the Good Witch Voice Danny Thomas The Tin Man Voice Mel Blanc Crow Voice Dal McKennon Omby Amby Voice Larry Storch Amos Voice Bill Cosby The Wizard of Oz Voice Fred Ladd Screenwriter Norm Prescott Screenwriter, Producer Lou Scheimer Producer Walter Scharf Original Music Don Christensen Art Director