Earl Bellamy Director Bob Denver Gilligan Actor Alan Hale Jr. Skipper Jonas Grumby Actor Jim Backus Thurston Howell III Actor Natalie Schafer Lovey Wentworth Howell Actor Russell Johnson Prof. Roy Hinkley Jr. Actor Dawn Wells Mary Ann Summers Actor Judith Baldwin Ginger Grant Actor Tom Bosley Henry Elliott Actor Marcia Wallace Myra Elliott Actor Ronnie Scribner Robbie Sloan Actor Lanna Saunders Actor Rod Browning Dr. Tom Larsen Actor Natasha Ryan Little girl Actor Lloyd J. Schwartz Producer