S-T
| Title | Director | Cast | Genre | Notes |
|---|---|---|---|---|
| Sailor's Lady | Allan Dwan | Nancy Kelly, Jon Hall | Comedy | |
| The Saint Takes Over | Jack Hively | George Sanders | Crime | |
| The Saint's Double Trouble | Jack Hively | George Sanders | Crime | |
| Santa Fe Trail | Michael Curtiz | Errol Flynn, Olivia de Havilland | Western | #5 in Top Grossing Films. |
| Saps at Sea | Gordon Douglas | Laurel and Hardy | Comedy | |
| The Sea Hawk | Michael Curtiz | Errol Flynn, Brenda Marshall, Claude Rains | Adventure | Nominated for 4 Academy Awards. #11 in Top Grossing Films. |
| Second Chorus | H. C. Potter | Fred Astaire, Paulette Goddard, Artie Shaw | Musical Comedy | Nominated for 2 Academy Awards. |
| Service with the Colors | B. Reeves Eason | Robert Armstrong, William Lundigan, Henry O'Neill | Drama Short | Nominated for Academy Award. |
| Seven Sinners | Tay Garnett | Marlene Dietrich, John Wayne | Adventure | |
| The Shop Around the Corner | H. C. Potter | James Stewart, Carole Lombard | Romantic comedy | |
| Siege | Julien Bryan | Julien Bryan | Documentary Short | Nominated for Academy Award. Footage preserved in US National Registry. |
| The Son of Monte Cristo | Rowland V. Lee | Louis Hayward, Joan Bennett, George Sanders | Adventure | Nominated for Academy Award. |
| South of Suez | Lewis Seiler | George Brent, Brenda Marshall | Drama | |
| Spring Parade | Henry Koster | Deanna Durbin, Robert Cummings, Mischa Auer | Comedy, Musical | Nominated for 4 Academy Awards. |
| Strange Cargo | Frank Borzage | Clark Gable, Joan Crawford, Ian Hunter | Drama Romance | #7 in Top Grossing Films. |
| Stranger on the Third Floor | Boris Ingster | Peter Lorre | Film noir | |
| Strike Up the Band | Busby Berkeley | Mickey Rooney, Judy Garland, Paul Whiteman and his Orchestra | Comedy, Musical | Won Academy Award; another 2 nominations. |
| Susan and God | George Cukor | Joan Crawford, Fredric March | Dramatic comedy | |
| Swiss Family Robinson | Edward Ludwig | Thomas Mitchell, Edna Best, Freddie Bartholomew | Adventure | Nominated for Academy Award. |
| Tacoma Narrows Bridge Collapse (Galloping Gertie) | Barney Elliott | Newsreel | Footage preserved in US National Registry. | |
| Teddy the Rough Rider | Ray Enright | Sidney Blackmer, Pierre Watkin, Arthur Loft | Short Drama | Won Academy Award. |
| That Gang of Mine | Joseph H. Lewis | Leo Gorcey | Comedy | 3rd (out of 22) film of East Side Kids series. |
| They Drive by Night | Raoul Walsh | George Raft, Humphrey Bogart, Ida Lupino, Ann Sheridan | Drama | |
| They Knew What They Wanted | Garson Kanin | Carole Lombard, Charles Laughton, William Gargan | Drama | Nominated for Academy Award. |
| 'Til We Meet Again | Edmund Goulding | Merle Oberon, Pat O'Brien, Geraldine Fitzgerald | Drama | Remake of One Way Passage (1932 film). |
| Tin Pan Alley | Walter Lang | Alice Faye, Betty Grable, Jack Oakie | Musical | Won Academy Award. #13 in Top Grossing Films. |
| Too Many Husbands | Wesley Ruggles | Jean Arthur, Fred MacMurray, Melvyn Douglas | Romantic comedy | Nominated for Academy Award. |
| Torrid Zone | William Keighley | James Cagney, Ann Sheridan, Pat O'Brien | Adventure | |
| Tugboat Annie Sails Again | Lewis Seiler | Comedy | ||
| Typhoon | Louis King | Dorothy Lamour, Robert Preston, Lynne Overman | Adventure | Nominated for Academy Award. |
Read more about this topic: List Of American Films Of 1940