Clint Howard as Ice Cream Man / Gregory Tudor

Olivia Hussey as Nurse Wharton

David Warner as Reverend Langley

Jan-Michael Vincent as Detective Gifford

Sandahl Bergman as Marion Cassera

David Naughton as Martin Cassera

Justin Isfeld as Johnny Spodak

Anndi McAfee as Heather Langley

JoJo Adams as Tuna Cassera

Mikey LeBeau as Small Paul

Steve Garvey as Mr. Spodak

Janet Wood as Mrs. Spodak

Andrea Evans as Wanda

Stephen Fiachi as Gus

Stephanie Champlin as Janet

Doug Llewelyn as Store Manager

Tom Reilly as Charley

Cole S. McKay as Ice Cream King

Tori Welles as Woman in Market (as Brittania Paris)

Zachary Benjamin as Roger Smith

Jessica Devlin as Mrs. Smith

E.E. Bell as Happy Doctor

Ryan Holihan as Photo Clerk

Ed Morgan as Crazy Doctor

Lee Majors II as Detective Maldwyn

Karl Makinen as Jacob Spodak

Keith Mills as Butcher

Matthew McCurley as Young Gregory

Kendall McCarthy as Police Officer

Jeanine Anderson as Mrs. Langley

Marla Frees as Gregory's Mother

Ken Hanes as Police Officer

Frank Roach as Park Janitor

Carly Adams as Little Girl

Roger Ferreira as Doctor in Psychiatric Institution (uncredited)

Roger Ferreira as Asylum Inmate in Straight Jacket (uncredited)