Who is the only actor/actress to have won 4 Oscars?

The correct answer to this question is Katharine Hepburn. She was born in 1907 and had a career that lasted over 50 years. The four movies Katharine Hepburn won Best Actress for were Guess Who's Coming To Dinner, Morning Glory, On Golden Pond, and The Lion In Winter.

Along with those four Best Actress wins, Hepburn was nominated for eight other Academy Awards. She also won an Emmy award for Love Among The Runs, which was a made for TV film. Hepburn was not only a legend in film and television, but her art also allowed her to work on Broadway.