Who is the oldest Oscar winner?

In terms of longevity, the oldest-living major Academy Award winner is Dame Olivia de Havilland, who celebrated her 101st birthday on July 1, 2017. She won Best Actress awards for "To Each His Own" (1946) and "The Heiress" (1949).

De Havilland replaced Luise Rainer, the German-born star who died December 30, 2014 -- two weeks shy of what would have been her 105th birthday on January 12, 2015. Rainer received back-to-back Best Actress awards for "The Great Ziegfeld" (1936) and "The Good Earth" (1937).

In terms of competition, the oldest person to win an Oscar was Christopher Plummer. On February 26, 2012, at the age of 82, he won the 2011 Best Supporting Actor award for his performance in "Beginners." He surpassed the previous record set on March 26, 1990 by Jessica Tandy, who won the 1989 Best Actress award for "Driving Miss Daisy" when she was 80 years and 292 days old.