 John IrelandJack Burden | Jack Burden |
 Broderick CrawfordWillie Stark | Willie Stark |
 Joanne DruAnne Stanton | Anne Stanton |
 John DerekTom Stark | Tom Stark |
 Mercedes McCambridgeSadie Burke | Sadie Burke |
 Shepperd StrudwickAdam Stanton | Adam Stanton |
 Ralph DumkeTiny Duffy | Tiny Duffy |
 Anne SeymourMrs. Lucy Stark | Mrs. Lucy Stark |
 Katherine WarrenMrs. Burden | Mrs. Burden |
 Raymond GreenleafJudge Monte Stanton | Judge Monte Stanton |
 Walter BurkeSugar Boy | Sugar Boy |
 Will WrightDolph Pillsbury | Dolph Pillsbury |
 Grandon RhodesFloyd McEvoy | Floyd McEvoy |
 Marshall BradfordSenator (uncredited) | Senator (uncredited) |
 Chet BrandenburgMan Listening to Speech (uncredited) | Man Listening to Speech (uncredited) |
 Wheaton ChambersSenator (uncredited) | Senator (uncredited) |
 Stephen ChasePuckett (uncredited) | Puckett (uncredited) |
| TTom ColemanMan Tearing Down Poster (uncredited) | Man Tearing Down Poster (uncredited) |
| JJames ConatyParty Guest (uncredited) | Party Guest (uncredited) |
| RRoy DarmourPolitician at Harrison's Headquarters (uncredited) | Politician at Harrison's Headquarters (uncredited) |
 Earle S. DeweyJoe Harrison (uncredited) | Joe Harrison (uncredited) |
 King DonovanReporter (uncredited) | Reporter (uncredited) |
| RRobert FilmerEditor (uncredited) | Editor (uncredited) |
 Paul FordSpokesman for Impeachment (uncredited) | Spokesman for Impeachment (uncredited) |
| DDick GordonPolitician (uncredited) | Politician (uncredited) |
| WWilliam E. GreenSenator (uncredited) | Senator (uncredited) |
| CCharles HaefeliMan in Cheap Bar (uncredited) | Man in Cheap Bar (uncredited) |
 Frank HagneyStark Strong-Arm Man (uncredited) | Stark Strong-Arm Man (uncredited) |
 Richard HaleRichard Hale (uncredited) | Richard Hale (uncredited) |
 Bert HanlonEditor (uncredited) | Editor (uncredited) |
