This is a list of the acting that was the youngest among their pool of Oscar nominees at the time of the ceremony from every year.

Disclaimer: At the 24th Academy Awards, the youngest nominee is unclear. Lee Grant's birth year is not confirmed, so technically the youngest confirmed nominee would be Marlon Brando who was born in 1924. However, generally, Grant's birth year is listed as anywhere between 1927 and 1931. Census data and other government documents suggest she was born in either 1925 or 1926 but Grant herself gave her birthyear as 1927 and this is what is listed in Oscar records. Regardless, this does put her as younger than Brando. I will be using 1927 as her birth year.

Special Notes:
- 94 of the following nominees were 30 or younger, for a total of 95.9%
- 30 of the following nominees were 20 or younger, for a total of 30.6%
- 7 of the following nominees were 10 or younger, for a total of 7.1%
- 12 of the following nominees went on to win the Oscar in their category, for a total of 12.4%.
- 20 of the following nominees are men, for a total of 20.4%. 78 of the following nominees are women, for a total of 79.6%.
- 42 of the following performers were nominated for Lead, for a total of 42.9%. 56 of the following performers were nominated for Supporting, for a total of 57.1%

The following performers were the youngest at multiple ceremonies:
- Mickey Rooney: 12th/16th
- Sal Mineo: 28th/33rd
- Natalie Wood: 34th/36th
- Jeff Bridges: 44th/47th
- Julia Roberts: 62nd/63rd
- Kate Winslet: 68th/70th/74th
- Saoirse Ronan: 80th/88th

The following films had both the oldest and youngest nominees of their year:
- Pinky
- The Heartbreak Kid
- Titanic
- Iris

The only performer to have been nominated as both the youngest of their year and later as the oldest of their year is Meryl Streep.