 Lenny BakerLarry Lapinsky | Larry Lapinsky |
 Shelley WintersFaye Lapinsky | Faye Lapinsky |
 Ellen GreeneSarah Roth | Sarah Roth |
 Lois SmithAnita Cunningham | Anita Cunningham |
 Christopher WalkenRobert Fulmer | Robert Fulmer |
 Dori BrennerConnie | Connie |
 Antonio FargasBernstein Chandler | Bernstein Chandler |
 Lou JacobiHerb | Herb |
 Mike KellinBen Lapinsky | Ben Lapinsky |
| MMichael EganActing Teacher | Acting Teacher |
 Rashel NovikoffMrs. Tupperman | Mrs. Tupperman |
| JJohn C. BecherCasting Director | Casting Director |
 Jeff GoldblumClyde Baxter | Clyde Baxter |
 Joe SpinellCop | Cop |
 Denise GalikEllen | Ellen |
 Rochelle OliverDoctor Marsha | Doctor Marsha |
 Sol FriederMr. Elkins | Mr. Elkins |
 Helen HanftHerb's Wife | Herb's Wife |
 John Ford NoonanBarney | Barney |
| CCarole MonferdiniSouthern Girl | Southern Girl |
| GGui AndrisanoMarco | Marco |
 Joe MaddenOld Poet | Old Poet |
| RRubin LevineStreet Violinist | Street Violinist |
 Milton FromeDrugstore Customer (uncredited) | Drugstore Customer (uncredited) |
 Paul MazurskyCasting Director (uncredited) | Casting Director (uncredited) |
 Bill MurrayNick Kessel (uncredited) | Nick Kessel (uncredited) |
 Vincent SchiavelliParty Guest (uncredited) | Party Guest (uncredited) |
 Rutanya AldaParty Guest (uncredited) | Party Guest (uncredited) |
 Stuart PankinParty Guest (uncredited) | Party Guest (uncredited) |
| AAnnie GagenActing Student (uncredited) | Acting Student (uncredited) |
