The 1948 Academy Awards were presented March 24, 1949 at the AMPAS Theatre, Los Angeles.
| Best Motion Picture | Hamlet (British) (J. Arthur Rank-Two Cities; Universal-International) |
| Johnny Belinda (Warner Bros.) |
| The Red Shoes (J. Arthur Rank-Archers; Eagle-Lion) |
| The Snake Pit (Twentieth Century-Fox) |
| The Treasure of the Sierra Madre (Warner Bros.) |
| Best Actor | Lew Ayres, Johnny Belinda |
| Montgomery Clift, The Search |
| Dan Dailey, When My Baby Smiles at Me |
| Laurence Olivier, Hamlet |
| Clifton Webb, Sitting Pretty |
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 Laurence Olivier, Hamlet Archive Photos |
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| Best Actress | Ingrid Bergman, Joan of Arc |
| Olivia de Havilland, The Snake Pit |
| Irene Dunne, I Remember Mama |
| Barbara Stanwyck, Sorry, Wrong Number |
| Jane Wyman, Johnny Belinda |
| Actor in a Supporting Role | Charles Bickford, Johnny Belinda |
| José Ferrer, Joan of Arc |
| Oscar Homolka, I Remember Mama |
| Walter Huston, The Treasure of the Sierra Madre |
| Cecil Kellaway, The Luck of the Irish |
| Actress in a Supporting Role | Barbara Bel Geddes, I Remember Mama |
| Ellen Corby, I Remember Mama |
| Agnes Moorehead, Johnny Belinda |
| Jean Simmons, Hamlet |
| Claire Trevor, Key Largo |
| Directing | John Huston, The Treasure of the Sierra Madre |
| Anatole Litvak, The Snake Pit |
| Jean Negulesco, Johnny Belinda |
| Laurence Olivier, Hamlet |
| Fred Zinnemann, The Search |
| Writing | | Motion Picture Story | Borden Chase, Red River | | Frances Flaherty and Robert Flaherty, Louisiana Story | | Emeric Pressburger, The Red Shoes | | Richard Schweizer and David Wechsler, The Search | | Malvin Wald, The Naked City | | Screenplay | Charles Brackett, Billy Wilder and Richard L. Breen, A Foreign Affair | | John Huston, The Treasure of the Sierra Madre | | Frank Partos and Millen Brand, The Snake Pit | | Richard Schweizer and David Wechsler, The Search | | Irmgard Von Cube and Allen Vincent, Johnny Belinda |
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| Cinematography | | Black-and-White | Joseph August, Portrait of Jennie | | William Daniels, The Naked City | | Charles B. Lang, Jr., A Foreign Affair | | Ted McCord, Johnny Belinda | | Nicholas Musuraca, I Remember Mama | | Color | Charles G. Clarke, Green Grass of Wyoming | | Robert Planck, The Three Musketeers | | William Snyder, The Loves of Carmen | | Joseph Valentine, William V. Skall and Winton Hoch, Joan of Arc |
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| Art Direction | | Black-and-White | Roger K. Furse, art direction; Carmen Dillon, set decoration, Hamlet | | Robert Haas, art direction; William Wallace, set decoration, Johnny Belinda | | Color | Richard Day, art direction; Edwin Casey Roberts and Joseph Kish, set decoration, Joan of Arc | | Hein Heckroth, art direction; Arthur Lawson, set decoration, The Red Shoes |
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| Sound Recording | Republic Studio Sound Dept., Moonrise |
| Twentieth Century-Fox Studio Sound Dept., The Snake Pit |
| Warner Bros. Studio Sound Dept., Johnny Belinda |
| Music | | Song | “Buttons and Bows,” The Paleface, Jay Livingston and Ray Evans, music and lyrics | | “For Every Man There's a Woman,” Casbah, Harold Arlen, music; Leo Robin, lyrics | | “It's Magic,” Romance on the High Seas, Jule Styne, music; Sammy Cahn, lyrics | | “This Is the Moment,” That Lady in Ermine, Frederick Hollander, music; Leo Robin, lyrics | | “The Woody Woodpecker Song,” Wet Blanket Policy, Ramey Idriss and George Tibbles, music and lyrics | | Scoring of a Dramatic or Comedy Picture | Brian Easdale, The Red Shoes | | Hugo Friedhofer, Joan of Arc | | Alfred Newman, The Snake Pit | | Max Steiner, Johnny Belinda | | William Walton, Hamlet | | Scoring of a Musical Picture | Johnny Green and Roger Edens, Easter Parade | | Lennie Hayton, The Pirate | | Ray Heindorf, Romance on the High Seas | | Alfred Newman, When My Baby Smiles at Me | | Victor Young, The Emperor Waltz |
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| Film Editing | Reginald Mills, The Red Shoes |
| Christian Nyby, Red River |
| Frank Sullivan, Joan of Arc |
| Paul Weatherwax, The Naked City |
| David Weisbart, Johnny Belinda |
| Costume Design | | Black-and-White | Roger K. Furse, Hamlet | | Irene, B.F.'s Daughter | | Color | Edith Head and Gile Steele, The Emperor Waltz | | Dorothy Jeakins and Karinska, Joan of Arc |
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| Special Effects | Paul Eagler, J. McMillan Johnson, Russell Shearman and Clarence Slifer, visual; Charles Freeman and James G. Stewart, audible, Portrait of Jennie |
| Ralph Hammeras, Fred Sersen and Edward Snyder, visual; Roger Heman, audible, Deep Waters |
| Short Subjects | | Cartoon | The Little Orphan (Tom and Jerry Series) (Frederick Quimby, producer; MGM) | | Mickey and the Seal (Mickey Mouse Series) (Walt Disney Productions; RKO Radio) | | Mouse Wreckers (Merrie Melodies Series) (Edward Selzer, producer; Warner Bros.) | | Robin Hoodlum (Fox and Crow Series) (United Productions of America; Columbia) | | Tea for Two Hundred (Donald Duck Series) (Walt Disney Productions; RKO Radio) | | One-Reel | Annie Was a Wonder (John Nesbitt Passing Parade Series) (Herbert Moulton, producer; MGM) | | Cinderella Horse (Sports Parade Series) (Gordon Hollingshead, producer; Warner Bros.) | | So You Want to Be on the Radio (Joe McDoakes Series) (Gordon Hollingshead, producer; Warner Bros.) | | Symphony of a City (Movietone Specialty Series) (Edmund H. Reek, producer; Twentieth Century-Fox) | | You Can't Win (Pete Smith Specialty Series) (Pete Smith, producer; MGM) | | Two-Reel | Calgary Stampede (Technicolor Special Series) (Gordon Hollingshead, producer; Warner Bros.) | | Going to Blazes (Herbert Morgan, producer; MGM) | | Samba-Mania (Musical Parade Featurette Series) (Harry Grey, producer; Paramount) | | Seal Island (True Life Adventure Series) (Walt Disney Productions; RKO Radio) | | Snow Capers (Thomas Mead, producer; Universal-International) |
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| Documentary | | Short Subject | Heart to Heart (Herbert Morgan, producer; Fact Film Organization) | | Operation Vittles (U.S. Army Air Force) | | Toward Independence (U.S. Army) | | Feature | The Quiet One (Film Documents; Mayer-Burstyn) | | The Secret Land (U.S. Navy; MGM) |
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| Irving G. Thalberg Memorial Award | Jerry Wald |
| Special Awards | To Monsieur Vincent (France), voted by the Academy Board of Governors as the most outstanding foreign language film released in the United States during 1948 |
| To Ivan Jandl for the outstanding juvenile performance of 1948 in The Search |
| To Sid Grauman, master showman, who raised the standard of exhibition of motion pictures |
| To Adolph Zukor, a man who has been called the father of the feature film in America, for his services to the industry over a period of 40 years |
| To Walter Wanger for distinguished service to the industry in adding to its moral stature in the world community by his production of the picture Joan of Arc |
