San Antonio Rose is an amiably wacky mini-musical evenly divided between its "official" stars, The Merry Macs, and a strong cast of supporting clowns. Robert Paige plays roadhouse operator Con Conway, whose establishment is in danger of being squeezed out by its competition. Stranded entertainers Hope Holloway (Jane Frazee) and Gabby Trent (Eve Arden) decide to revivify Conway's establishment by staging an energetic floor show built around the talented Merry Macs. A rival club owner dispatches his two top hooligans Jigsaw Kennedy (Lon Chaney Jr.) and Benny the Bounce (Shemp Howard) to wreck Conway's club by posing as waiters, but the two stupes are easily cowed into submission--by the leading ladies!
| Actor | Role |
|---|---|
 Jane FrazeeHope Holloway | Hope Holloway |
 Robert PaigeCon Conway | Con Conway |
 Eve ArdenGabby Trent | Gabby Trent |
 Lon Chaney Jr.Jigsaw Kennedy | Jigsaw Kennedy |
 Shemp HowardBenny the Bounce | Benny the Bounce |
 Richard LaneCharles J. Willoughby | Charles J. Willoughby |
| EElaine CondosElaine - Dancer | Elaine - Dancer |
 Louis Da PronAlex - Dancer | Alex - Dancer |
 Charles LangRalph | Ralph |
 Riley HillJimmy (as Roy Harris) | Jimmy (as Roy Harris) |
| PPeter SullivanDon | Don |
 Richard DaviesEddie | Eddie |
 Luis AlberniNick Ferris | Nick Ferris |
 Vernon DentWorthington | Worthington |
 Charlie HallWaitress | Waitress |
 Cyril RingNot listed | Not listed |
 Jason Robards Sr.Man at Radio Station | Man at Radio Station |