The following is a list of the winners in all categories at the 84th Academy Awards.

- Best picture: The Artist.

- Best director: Michel Hazanavicius for The Artist.

- Best leading actor: Jean Dujardin in The Artist.

- Best leading actress: Meryl Streep in The Iron Lady.

- Best supporting actor: Christopher Plummer in Beginners.

- Best supporting actress: Octavia Spencer in The Help.

- Best foreign language film: A Separation (Iran).

- Best animated feature: Rango.

- Best original screenplay: Midnight in Paris.

- Best adapted screenplay: The Descendants.

- Best original score: The Artist.

- Best original song: Man or Muppet from The Muppets.

- Best art direction: Hugo.

- Best cinematography: Hugo.

- Best costume design: The Artist.

- Best documentary feature: Undefeated.

- Best documentary short: Saving Face.

- Best film editing: The Girl with the Dragon Tattoo.

- Best makeup: The Iron Lady.

- Best short animated film: The Fantastic Flying Books of Mr Morris Lessmore.

- Best short live action film: The Shore.

- Best sound editing: Hugo.

- Best sound mixing: Hugo.

- Best visual effects: Hugo.

Most Oscars won
The Artist - 5

Hugo - 5

The Iron Lady - 2

Beginners - 1

The Help - 1

Midnight in Paris - 1

The Descendants - 1

A Separation - 1

The Girl with the Dragon Tattoo - 1

Undefeated - 1

The following nominated films failed to win any awards:

Albert Nobbs

Harry Potter and the Deathly Hallows Part 2

Tinker Tailor Soldier Spy

Transformers: Dark of the Moon

The Tree of Life

Bridesmaids

Extremely Loud and Incredibly Close

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