 Marlon BrandoTerry Malloy | Terry Malloy |
 Eva Marie SaintEdie Doyle | Edie Doyle |
 Karl MaldenFather Barry | Father Barry |
 Lee J. CobbJohnny Friendly | Johnny Friendly |
 Rod SteigerCharley Malloy | Charley Malloy |
 Pat HenningKayo Dugan | Kayo Dugan |
 Leif EricksonGlover | Glover |
 James WesterfieldBig Mac | Big Mac |
 Tony GalentoTruck | Truck |
| TTami MaurielloTillio | Tillio |
 John F. Hamilton'Pop' Doyle | 'Pop' Doyle |
 John HeldabrandMott | Mott |
 Rudy BondMoose | Moose |
 Don BlackmanLuke | Luke |
| AArthur KeeganJimmy | Jimmy |
| AAbe SimonBarney | Barney |
 Martin BalsamGillette (uncredited) | Gillette (uncredited) |
| DDan BerginSidney (uncredited) | Sidney (uncredited) |
| ZZachary CharlesDues Collector (uncredited) | Dues Collector (uncredited) |
 Fred GwynneSlim (uncredited) | Slim (uncredited) |
 Anne HegiraMrs. Collins (uncredited) | Mrs. Collins (uncredited) |
 Pat HingleJocko (uncredited) | Jocko (uncredited) |
 Katherine MacGregorLongshoreman's Mother (uncredited) | Longshoreman's Mother (uncredited) |
| BBarry MacollumJohnny's Banker (uncredited) | Johnny's Banker (uncredited) |
| TTiger Joe MarshLongshoreman (uncredited) | Longshoreman (uncredited) |
 Nehemiah PersoffCab Driver (uncredited) | Cab Driver (uncredited) |
 Johnny SevenLongshoreman (uncredited) | Longshoreman (uncredited) |
 Michael V. GazzoBit (uncredited) | Bit (uncredited) |
