Bob Denver as Gilligan

Alan Hale Jr. as Skipper Jonas Grumby

Jim Backus as Thurston Howell III

Natalie Schafer as Lovey Wentworth Howell

Judith Baldwin as Ginger Grant

Russell Johnson as Professor Roy Hinkley, Jr.

Dawn Wells as Mary Ann Summers

Vincent Schiavelli as Dimitri

Art LaFleur as Ivan

Norman Bartold as Producer

Barbara Mallory as Cindy Smith

June Whitley Taylor as Miss Ainsworth

Martin Rudy as Dean

Mary Gregory as Mrs. Devonshire

Glenn Robards as Mr. Devonshire

Diana Chesney as Mrs. Fellows

Victor Rogers as Mr. Fellows

Michael Flanagan as Director

Martin Ashe as Butler

Robert Wood as Tony

John Wheeler as Studio Guard

Alex Rodine as 1st Officer

Don Marshall as FBI Man #1

Mel Prestidge as Governor's Aide

Lewis Arquette as Judge

Judd Laurance as Technician

Michael Macready as FBI Man #2

Richard Rorke as Helicopter Pilot

Marcus K. Mukai as Hawaiian Man

Snag Werris as Camera Man

Micki Waugh as Pom Pom Girl

Alisa Powell as Pom Pom Girl

Portia Stevens as Pom Pom Girl

Candace Bowen as Pom Pom Girl

Mario Machado as Reporter (uncredited)

Stan Rodarte as Reporter at Homecoming Parade (uncredited)