Justin Henry was 8 years and 276 days old when he was nominated for Best Supporting Actor for Kramer vs. Kramer (1979).
Jackie Cooper was 9 years and 20 days old when he was nominated for Best Actor for Skippy (1931).
Tatum O'Neal was 10 years and 106 days old when she was nominated for Best Supporting Actress for Paper Moon (1973), which she then won.
Mary Badham was 10 years and 141 days old when she was nominated for Best Supporting Actress for To Kill a Mockingbird (1962).
Quvenzhané Wallis was 9 years and 135 days old when she was nominated for Best Actress for Beasts of the Southern Wild (2012).
Quinn Cummings was 10 years and 192 days old when she was nominated for Best Supporting Actress for The Goodbye Girl (1977).
Abigail Breslin was 10 years and 284 days old when she was nominated for Best Supporting Actress for Little Miss Sunshine (2006).
Patty McCormack was 11 years and 181 days old when she was nominated for Best Supporting Actress for The Bad Seed (1956).
Anna Paquin was 11 years and 200 days old when she was nominated for Best Supporting Actress for The Piano (1993), which she then won.
Haley Joel Osment was 11 years and 311 days old when he was nominated for Best Supporting Actor for The Sixth Sense (1999).
And Brandon deWilde was 11 years and 312 days old when he was nominated for Best Supporting Actor for Shane (1953).