| Name | Character | Episodes |
|---|---|---|
| Helen Hunt | Lisa Quinn | 22 |
| Anthony Edwards | 22 | |
| Patty Duke | Molly Quinn | 22 |
| Richard Crenna | 22 | |
| Della Reese | 22 | |
| Joel Brooks | 2 | |
| Jerry Houser | 1 | |
| Robert Picardo | 1 | |
| Richard Sanders | 1 | |
| Michael Horse | 1 | |
| Ford Rainey | 1 | |
| Sal Viscuso | 1 | |
| Charles Aidman | 1 | |
| Scatman Crothers | 1 | |
| Michael Constantine | 1 | |
| Fran Ryan | 1 | |
| Charlie Callas | 1 | |
| William Sanderson | 1 | |
| Beverly Archer | 1 | |
| Florence Halop | 1 | |
| Oliver Clark | 1 | |
| Larry Gelman | 1 |