 Bing CrosbyFather O'Malley | Father O'Malley |
 Ingrid BergmanSister Mary Benedict | Sister Mary Benedict |
 Henry TraversHorace P. Bogardus | Horace P. Bogardus |
 William GarganJoe Gallagher | Joe Gallagher |
 Ruth DonnellySister Michael | Sister Michael |
 Joan CarrollPatsy Gallagher | Patsy Gallagher |
 Martha SleeperMary Gallagher | Mary Gallagher |
 Rhys WilliamsDr. McKay | Dr. McKay |
| RRichard TylerEddie Breen | Eddie Breen |
 Una O'ConnorMrs. Breen | Mrs. Breen |
| EEdward Coch Jr.Baby Jesus (uncredited) | Baby Jesus (uncredited) |
| AAina ConstantNun (uncredited) | Nun (uncredited) |
| JJimmy CraneLuther (uncredited) | Luther (uncredited) |
| GGwen CrawfordNun (uncredited) | Nun (uncredited) |
| BBobby Dolan Jr.Bobby (uncredited) | Bobby (uncredited) |
| JJimmie DundeeCabbie (uncredited) | Cabbie (uncredited) |
| BBobby FrascoTommy Smith (uncredited) | Tommy Smith (uncredited) |
 Matt McHughSporting Goods Salesman (uncredited) | Sporting Goods Salesman (uncredited) |
| PPeggy McKimSchoolgirl (uncredited) | Schoolgirl (uncredited) |
| BBetty Jean NicholsSchoolgirl (uncredited) | Schoolgirl (uncredited) |
| GGeorgie NokesBoy (uncredited) | Boy (uncredited) |
 Eva NovakNun (uncredited) | Nun (uncredited) |
| JJoe PalmaWorkman (uncredited) | Workman (uncredited) |
 Dewey RobinsonPedestrian Pulling Bogardus (uncredited) | Pedestrian Pulling Bogardus (uncredited) |
| CCora ShannonElderly Woman (uncredited) | Elderly Woman (uncredited) |
 John SmithChoir Member (uncredited) | Choir Member (uncredited) |
 Pietro SossoBlind Man (uncredited) | Blind Man (uncredited) |
 Minerva UrecalLandlady (uncredited) | Landlady (uncredited) |
 Edna May WonacottDelphine Ford (uncredited) | Delphine Ford (uncredited) |
