 | Christopher Knight als Studs Lonigan |
 | Frank Gorshin als Kenny Killarney |
 | Venetia Stevenson als Lucy Scanlon |
 | Carolyn Craig als Catherine Banahan |
 | Jack Nicholson als Weary Reilly |
| Robert Casper als Paulie Haggerty |
 | Dick Foran als Patrick Lonigan |
 | Katherine Squire als Mrs. Lonigan |
 | Jay C. Flippen als Father Gilhooey |
 | Josie Lloyd als New Year's Eve Party Girl (uncredited) |
| Irving Lerner | Director |
| Philip Yordan | Screenplay |
| James T. Farrell | Novel |
| Leon Chooluck | Associate Producer |
| Philip Yordan | Producer |
| Jockey Arthur Feindel | Director of Photography |
| Haskell Wexler | Director of Photography |
| Verna Fields | Editor |
| Jerry Goldsmith | Original Music Composer |
| Lloyd Garnell | Lighting Technician |
| Harlow Stengel | Camera Operator |
