 Zero MostelRev. Pious Blue | Rev. Pious Blue |
 Kim NovakSister Lyda Kebanov (forger) | Sister Lyda Kebanov (forger) |
 Clint WalkerRanger Ben Quick | Ranger Ben Quick |
 Claude AkinsSlade | Slade |
 Akim TamiroffPapa (Juan's father) | Papa (Juan's father) |
 Larry StorchJuan | Juan |
 John AndersonMayor Kincaid | Mayor Kincaid |
 Sam JaffeBrother Lilac Bailey (art forger) | Brother Lilac Bailey (art forger) |
 MakoSecret Agent Fong | Secret Agent Fong |
 Elisha Cook Jr.Jeb | Jeb |
 Ruth WarrickMrs. Applebee | Mrs. Applebee |
 John FiedlerBrother Dismas Ostracorn - Explosives | Brother Dismas Ostracorn - Explosives |
 John LarchSheriff of Friendly | Sheriff of Friendly |
 Peter WhitneyBrother Jordan Cass - Tunneling | Brother Jordan Cass - Tunneling |
 Norman AldenThe Great Gregory - Balloonist | The Great Gregory - Balloonist |
 Grady SuttonRev. Simms | Rev. Simms |
 Bill ZuckertRanger Commander (as William Zuckert) | Ranger Commander (as William Zuckert) |
 Bob SteeleFirst Guard | First Guard |
| BBen AlizaSecond Guard | Second Guard |
 Mickey SimpsonThird Guard | Third Guard |
 Byron KeithDeputy | Deputy |
 Kenny EndosoChinese Laundryman | Chinese Laundryman |
| RRoy K. OgataChinese Laundryman (as Roy Ogata) | Chinese Laundryman (as Roy Ogata) |
| GGeorge SasakiChinese Laundryman | Chinese Laundryman |
| YYoneo IguchiChinese Laundryman | Chinese Laundryman |
| HHiroshi HissamuniChinese Laundryman | Chinese Laundryman |
