Dwayne Hickman
Dobie Gillis (39 eps)
Bob Denver
Maynard G. Krebs (39 eps)
Frank Faylen
Herbert T. Gillis (39 eps)
Florida Friebus
Winifred Gillis (39 eps)
Sheila James Kuehl
Zelda Gilroy (39 eps)
Tuesday Weld
Thalia Menninger (14 eps)
Marjorie Bennett
Blossom Kenney (6 eps)
Warren Beatty
Milton Armitage (5 eps)
Michael Burns
Chrissie Tyler (as Mike Burns) (2 eps)
Verna Felton
Mrs. Lapping (1 eps)
Gina Gillespie
Hermione Krausmeyer (1 eps)
Joey D. Vieira
Bobby Wilkins (as Donald Keeler) (1 eps)
Jane Wald
Arabella Parmalee (1 eps)
Bob Barran
Malt Shop Customer (1 eps)
Page Slattery
Moose McCullough (1 eps)
Anne Whitfield
Dibble (1 eps)
Kathy Wakefield
Malt Shop Customer (1 eps)
Jan Stine
Malt Shop Customer (1 eps)
Christian Kay
Gwyneth Krausmeyer (1 eps)
Mark Patrick
Malt Shop Customer (1 eps)
James Westmoreland
Paisan (1 eps)
Alberto Morin
Generalissimo Sebastien Romero (1 eps)
Milton Frome
Judge (1 eps)