#5. Mary Badham
Age at Awards Show: 10 years, 6 months, 1 day old
Award: Actress in a Supporting Role (1963) for “To Kill a Mockingbird”
Mary Badham landed her role in “To Kill a Mockingbird” at the age of 9 with no previous acting experience. She followed this performance with a few roles but largely retired from the industry at the age of 15. Badham now devotes her time to her family, education, and art restoration.