Bonnie Franklin
Ann Romano (26 eps)
Valerie Bertinelli
Barbara Cooper (26 eps)
Pat Harrington, Jr.
Dwayne Schneider (26 eps)
Mackenzie Phillips
Julie Cooper (26 eps)
Boyd Gaines
Mark Royer (26 eps)
Michael Lembeck
Max Horvath (26 eps)
Glenn Scarpelli
Alex Handris (26 eps)
Shelley Fabares
Francine Webster (26 eps)
Tish Smiley
Sally (1 eps)
K.C. Martel
Jason / Bernie Danner (1 eps)