 Mia FarrowRosemary Woodhouse | Rosemary Woodhouse |
 John CassavetesGuy Woodhouse | Guy Woodhouse |
 Ruth GordonMinnie Castevet | Minnie Castevet |
 Sidney BlackmerRoman Castevet | Roman Castevet |
 Maurice EvansHutch | Hutch |
 Ralph BellamyDr. Sapirstein | Dr. Sapirstein |
 Victoria VetriTerry | Terry |
 Patsy KellyLaura-Louise | Laura-Louise |
 Elisha Cook Jr.Mr. Nicklas | Mr. Nicklas |
 Emmaline HenryElise Dunstan | Elise Dunstan |
 Charles GrodinDr. Hill | Dr. Hill |
| HHanna LandyGrace Cardiff | Grace Cardiff |
 Phil LeedsDr. Shand | Dr. Shand |
 D'Urville MartinDiego | Diego |
 Hope SummersMrs. Gilmore | Mrs. Gilmore |
 Marianne GordonRosemary's Girl Friend | Rosemary's Girl Friend |
 Wende WagnerRosemary's Girl Friend | Rosemary's Girl Friend |
 William CastlePhone Booth Man (uncredited) | Phone Booth Man (uncredited) |
 Tony CurtisDonald Baumgart (voice) (uncredited) | Donald Baumgart (voice) (uncredited) |
| CClay TannerThe Devil (uncredited) | The Devil (uncredited) |
 Almira SessionsMrs. Sabatini (uncredited) | Mrs. Sabatini (uncredited) |
| JJean InnessSister Agnes (uncredited) | Sister Agnes (uncredited) |
 Max WagnerMan in Dream Sequence (uncredited) | Man in Dream Sequence (uncredited) |
 Walter BaldwinMr. Wees (uncredited) | Mr. Wees (uncredited) |
 Mona KnoxMrs. Byron (uncredited) | Mrs. Byron (uncredited) |
| CCraig LittlerJimmy (uncredited) | Jimmy (uncredited) |
| PPatricia O'NealMrs. Wees (uncredited) | Mrs. Wees (uncredited) |
 Carol BrewsterClaudia Comfort (uncredited) | Claudia Comfort (uncredited) |
 Robert OsterlohMr. Fountain (uncredited) | Mr. Fountain (uncredited) |
 George R. RobertsonLou Comfort (uncredited) | Lou Comfort (uncredited) |
