20ª edición dos Óscar

A 20.ª entrega dos premios Óscar tivo lugar o día 20 de marzo de 1948 en Shrine Auditorium dos Ánxeles. O mestre de cerimonias foi Robert Montgomery.

Premios

Os gañadores aparecen en primeiro lugar e en grosas.

Mellor filme	Mellor director
Darryl F. Zanuck para 20th Century Fox - Gentleman's Agreement Samuel Goldwyn para RKO Radio Pictures - The Bishop's Wife Adrian Scott para RKO Radio Pictures - Crossfire Ronald Neame para Universal Studios e General Film Distributors, Ltd. - Great Expectations William Perlberg para 20th Century Fox - Miracle on 34th Street	Elia Kazan – Gentleman's Agreement George Cukor – A Double Life Edward Dmytryk – Crossfire Henry Koster – The Bishop's Wife David Lean – Great Expectations
Mellor actor	Mellor actriz
Ronald Colman – A Double Life John Garfield – Corpo e alma Gregory Peck – Gentleman's Agreement William Powell – Life With Father Michael Redgrave – Mourning Becomes Electra	Loretta Young – The Farmer's Daughter Joan Crawford – Possessed Susan Hayward – Smash-Up, the Story of a Woman Dorothy McGuire – Gentleman's Agreement Rosalind Russell – Mourning Becomes Electra
Mellor actor secundario	Mellor actriz secundaria
Edmund Gwenn – Miracle on 34th Street Charles Bickford – The Farmer's Daughter Thomas Gomez – Ride the Pink Horse Robert Ryan – Crossfire Richard Widmark – Kiss of Death	Celeste Holm – Gentleman's Agreement Ethel Barrymore – The Paradine Case Gloria Grahame – Crossfire Marjorie Main – The Egg and I Anne Revere – Gentleman's Agreement
Mellor guión orixinal	Mellor guión adaptado
The Bachelor and the Bobby-Soxer – Sidney Sheldon Sciuscià – Sergio Amidei, Adolfo Franci, C. G. Viola e Cesare Zavattini Monsieur Verdoux – Charles Chaplin A Double Life – Ruth Gordon e Garson Kanin Corpo e alma – Abraham Polonsky	Miracle on 34th Street – George Seaton Great Expectations – David Lean, Ronald Neame e Anthony Havelock-Allan Boomerang! – Richard Murphy Crossfire – John Paxton Gentleman's Agreement – Moss Hart
Mellor argumento	Mellor curtametraxe de animación
Miracle on 34th Street – Valentine Davies La cage aux rossignols – Georges Chaperot e René Wheeler It Happened on Fifth Avenue – Herbert Clyde Lewis e Frederick Stephani Kiss of Death – Eleazar Lipsky Smash-Up, the Story of a Woman – Dorothy Parker e Frank Cavett	Tweetie Pie – Edward Selzer Chip an' Dale – Walt Disney Dr. Jekyll and Mr. Mouse – Frederick Quimby Pluto's Blue Note – Walt Disney Tubby the Tuba – George Pal
Mellor documental	Mellor curtametraxe documental
Design for Death Journey Into Medicine The World Is Rich	First Steps Passport to Nowhere School in the Mailbox
Mellor curtametraxe de ficción, un rolo	Mellor curtametraxe de ficción, dous rolos
Goodbye Miss Turlock – Herbert Moulton Brooklyn, U.S.A. – Thomas Mead Moon Rockets – Jerry Fairbanks Now You See It – Pete Smith So You Want to Be in Pictures – Gordon Hollingshead	Climbing the Matterhorn – Irving Allen Champagne for Two – Harry Grey Fight of the Wild Stallions – Thomas Mead Give Us the Earth – Herbert Morgan A Voice Is Born: The Story of Niklos Gafni – Ben Blake
Mellor banda sonora, comedia ou drama	Mellor banda sonora, musical
A Double Life – Miklos Rozsa The Bishop's Wife – Hugo Friedhofer Captain from Castile – Alfred Newman Forever Amber – David Raksin Life With Father – Max Steiner	Mother Wore Tights – Alfred Newman Song of the South – Daniele Amfitheatrof, Paul J. Smith e Charles Wolcott Road to Rio – Robert Emmett Dolan Fiesta – Johnny Green My Wild Irish Rose – Ray Heindorf e Max Steiner
Mellor canción	Mellor son
"Zip-a-Dee-Doo-Dah" de Song of the South – Música de Allie Wrubel; Letra de Ray Gilbert "A Gal in Calico" de The Time, the Place and the Girl – Música de Arthur Schwartz; Letra de Leo Robin "I Wish I Didn't Love You So" de The Perils of Pauline – Música e letra de Frank Loesser "Pass That Peace Pipe" de Good News – Música e letra de Ralph Blane, Hugh Martin e Roger Edens "You Do" de Mother Wore Tights – Música de Josef Myrow; Letra de Mack Gordon	The Bishop's Wife – Gordon E. Sawyer, Samuel Goldwyn Studio Sound Department Green Dolphin Street – Douglas Shearer, MGM Studio Sound Department T-Men – Jack R. Whitney, Sound Service, Inc.
Mellor dirección de arte, branco e negro	Mellor dirección de arte, cor
Great Expectations – Dirección artística: John Bryan; Decorados: Wilfred Shingleton The Foxes of Harrow – Dirección artística: Lyle Wheeler e Maurice Ransford; Decorados: Thomas Little e Paul S. Fox	Black Narcissus – Dirección artística and Decorados: Alfred Junge Life With Father – Dirección artística: Robert M. Haas; Decorados: George James Hopkins
Mellor fotografía, branco e negro	Mellor fotografía, cor
Great Expectations – Guy Green Green Dolphin Street – George Folsey O fantasma e a señora Muir – Charles Lang, Jr.	Black Narcissus – Jack Cardiff Mother Wore Tights – Harry Jackson Life With Father – Peverell Marley e William V. Skall
Mellor montaxe	Mellores efectos visuais
Corpo e alma – Francis Lyon e Robert Parrish The Bishop's Wife – Monica Collingwood Gentleman's Agreement – Harmon Jones Odd Man Out – Fergus McDonnell Green Dolphin Street – George White	Green Dolphin Street – A. Arnold Gillespie, Warren Newcombe, Douglas Shearer e Michael Steinore Unconquered – Farciot Edouart, Devereux Jennings, Gordon Jennings, Wallace Kelley, Paul Lerpae e George Dutton

Oscar honorífico

• James Baskett
• Bill and Coo
• Colonel William N. Selig, Albert E. Smith, Thomas Armat e George K. Spoor

Mellor filme en lingua non inglesa

• Sciuscià (Italia)

Predecesor: 19ª edición dos Óscar

Premios Óscar 20ª edición dos Óscar

Sucesor: 21ª edición dos Óscar