| Title | Director | Cast | Genre | Notes |
|---|
| Raiders of the South | Lambert Hillyer | Johnny Mack Brown, Evelyn Brent, Raymond Hatton | Western | Monogram |
| Railroaded! | Anthony Mann | John Ireland, Sheila Ryan, Hugh Beaumont | Film noir | Eagle-Lion |
| Rainbow Over the Rockies | Oliver Drake | Jimmy Wakely, Dennis Moore, Jack Baxley | Western | Monogram |
| Ramrod | André de Toth | Joel McCrea, Veronica Lake, Donald Crisp | Western | United Artists |
| Range Beyond the Blue | Ray Taylor | Eddie Dean, Roscoe Ates, Helen Mowery | Western | PRC |
| The Red House | Delmer Daves | Edward G. Robinson, Lon McCallister, Judith Anderson | Horror | United Artists |
| The Red Stallion | Lesley Selander | Robert Paige, Noreen Nash, Ted Donaldson | Drama | Eagle-Lion |
| Repeat Performance | Alfred L. Werker | Louis Hayward, Joan Leslie, Virginia Field | Film noir | Eagle-Lion |
| Return of the Lash | Ray Taylor | Lash LaRue, Al St. John, George Chesebro | Western | PRC |
| The Return of Rin Tin Tin | Max Nosseck | Donald Woods, Claudia Drake, Robert Blake | Drama | Eagle-Lion |
| Ride the Pink Horse | Robert Montgomery | Robert Montgomery, Wanda Hendrix, Thomas Gomez | Film noir | Universal |
| Riders of the Lone Star | Derwin Abrahams | Charles Starrett, Virginia Hunter, Smiley Burnette | Western | Columbia |
| Ridin' Down the Trail | Howard Bretherton | Jimmy Wakely, Douglas Fowley, Dub Taylor | Western | Monogram |
| Riding the California Trail | William Nigh | Gilbert Roland, Teala Loring, Martin Garralaga | Western | Monogram |
| Riffraff | Ted Tetzlaff | Pat O'Brien, Walter Slezak, Anne Jeffreys | Film noir | RKO |
| Road to the Big House | Walter Colmes | John Shelton, Ann Doran, Guinn "Big Boy" Williams | Crime | Lippert |
| Road to Rio | Norman Z. McLeod | Bob Hope, Bing Crosby, Dorothy Lamour | Comedy | Paramount; 5th of series |
| Robin Hood of Monterey | Christy Cabanne | Gilbert Roland, Evelyn Brent, Jack La Rue | Adventure | Monogram |
| Robin Hood of Texas | Lesley Selander | Gene Autry, Lynne Roberts, Adele Mara | Western | Republic |
| The Romance of Rosy Ridge | Roy Rowland | Van Johnson, Thomas Mitchell, Janet Leigh | Western | MGM |
| Roses Are Red | James Tinling | Peggy Knudsen, Don Castle, Patricia Knight | Crime | 20th Century Fox |
| Rose of Santa Rosa | Ray Nazarro | Patricia Barry, Eduardo Noriega, Eduardo Ciannelli | Comedy | Columbia |
| Rustlers of Devil's Canyon | R. G. Springsteen | Allan Lane, Peggy Stewart, Martha Wentworth | Western | Republic |
| Saddle Pals | Lesley Selander | Gene Autry, Lynne Roberts, Sterling Holloway | Western | Republic |
| Sarge Goes to College | Will Jason | Freddie Stewart, June Preisser, Frankie Darro | Comedy | Monogram |
| Scared to Death | Christy Cabanne | Bela Lugosi, George Zucco, Molly Lamont | Horror | Lippert |
| The Sea of Grass | Elia Kazan | Spencer Tracy, Katharine Hepburn, Melvyn Douglas | Western | MGM |
| Second Chance | James Tinling | Kent Taylor, Louise Currie, Dennis Hoey | Crime | 20th Century Fox |
| Secret Beyond the Door | Fritz Lang | Joan Bennett, Michael Redgrave, Anne Revere | Horror | Universal |
| The Secret Life of Walter Mitty | Norman Z. McLeod | Danny Kaye, Virginia Mayo, Boris Karloff | Comedy | RKO; remade in 2013 |
| The Senator Was Indiscreet | George S. Kaufman | William Powell, Ella Raines, Arleen Whelan | Comedy | Universal |
| Seven Keys to Baldpate | Lew Landers | Phillip Terry, Jacqueline White, Eduardo Ciannelli | Mystery | RKO |
| Seven Were Saved | William H. Pine | Richard Denning, Catherine Craig, Russell Hayden | Drama | Paramount |
| Shadow Valley | Ray Taylor | Eddie Dean, Jennifer Holt, Roscoe Ates | Western | PRC |
| The Shocking Miss Pilgrim | George Seaton | Betty Grable, Dick Haymes, Anne Revere | Musical | 20th Century Fox |
| Shoot to Kill | William Berke | Robert Kent, Luana Walters, Edmund MacDonald | Crime | Lippert; remade in 1988 |
| The Sin of Harold Diddlebock | Preston Sturges | Harold Lloyd, Rudy Vallee, Raymond Walburn | Comedy | United Artists |
| Sinbad the Sailor | Richard Wallace | Douglas Fairbanks Jr., Maureen O'Hara, Walter Slezak | Fantasy | RKO |
| Singapore | John Brahm | Fred MacMurray, Ava Gardner, Roland Culver | Film noir | Universal |
| Six-Gun Serenade | Ford Beebe | Jimmy Wakely, Kay Morley, Jimmy Martin | Western | Monogram |
| Slave Girl | Charles Lamont | Yvonne De Carlo, George Brent, Broderick Crawford | Adventure | Universal |
| Smash-Up, the Story of a Woman | Stuart Heisler | Susan Hayward, Lee Bowman, Eddie Albert | Film noir | Universal; 2 Oscar nominations |
| Smoky River Serenade | Derwin Abrahams | Ruth Terry, Paul Campbell, Virginia Hunter | Western | Columbia |
| Something in the Wind | Irving Pichel | Deanna Durbin, Donald O'Connor, Charles Winninger | Musical | Universal |
| The Son of Rusty | Lew Landers | Tom Powers, Ann Doran, Stephen Dunne | Drama | Columbia |
| Song of Love | Clarence Brown | Katharine Hepburn, Paul Henreid, Robert Walker | Drama | MGM. Biopic of Robert Schumann |
| Song of Scheherazade | Walter Reisch | Yvonne De Carlo, Jean-Pierre Aumont, Eve Arden | Fantasy | Universal |
| Song of the Wasteland | Thomas Carr | Jimmy Wakely, Marshall Reed, Ted Adams | Western | Monogram |
| Song of the Thin Man | Edward Buzzell | William Powell, Myrna Loy, Patricia Morison | Mystery | MGM. Last of Thin Man series |
| South of the Chisholm Trail | Derwin Abrahams | Charles Starrett, Nancy Saunders, Smiley Burnette | Western | Columbia |
| The Spirit of West Point | Ralph Murphy | Felix Blanchard, Glenn Davis, Anne Nagel | Drama | Film Classics |
| Spoilers of the North | Richard Sale | Paul Kelly, Lorna Gray, Evelyn Ankers | Action | Republic |
| Sport of Kings | Robert Gordon | Paul Campbell, Gloria Henry, Harry Davenport | Sports | Columbia |
| Springtime in the Sierras | William Witney | Roy Rogers, Jane Frazee, Andy Devine | Western | Republic |
| Stage to Mesa City | Ray Taylor | Lash LaRue, Jennifer Holt, George Chesebro | Western | PRC |
| Stallion Road | James V. Kern | Ronald Reagan, Alexis Smith, Zachary Scott | Drama | Warner Bros. |
| Stepchild | James Flood | Brenda Joyce, Donald Woods, Vivian Austin | Drama | PRC |
| Stork Bites Man | Cy Endfield | Jackie Cooper, Meg Randall, Emory Parnell | Comedy | United Artists |
| The Stranger from Ponca City | Derwin Abrahams | Charles Starrett, Virginia Hunter, Smiley Burnette | Western | Columbia |
| Suddenly, It's Spring | Mitchell Leisen | Paulette Goddard, Fred MacMurray, Macdonald Carey | Comedy | Paramount |
| Sweet Genevieve | Arthur Dreifuss | Jean Porter, Jimmy Lydon, Lucien Littlefield | Comedy | Columbia |
| Swing the Western Way | Derwin Abrahams | Jack Leonard, Thurston Hall, Regina Wallace | Western | Columbia |