It hasn't happened yet, although there have been back-to-back winners in the categories of Best Actor, Best Actress and Best Supporting Actor. Only two performers have ever won the Best Supporting Actress award twice -- Shelley Winters and Dianne Wiest -- but their wins came years apart.
German actress Luise Rainer won back-to-back Best Actress awards for her performances in "The Great Ziegfeld" (1936) and "The Good Earth" (1937). Spencer Tracy won consecutive Best Actor awards for his work in "Captains Courageous" (1938) and "Boys Town" (1938). Tom Hanks duplicated the feat with back-to-back Best Actor wins for "Philadelphia" (1993) and "Forrest Gump" (1974). Jason Robards received consecutive Best Supporting Actor Oscars for his performances in "All the President's Men" (1976) and "Julia" (1977).
Traditionally, either the Best Supporting Actor or Best Supporting Actress award is one of the first revealed during the Oscars ceremony. The other award is usually announced an hour or so later.
She won once, for her first and only nomination as Best Supporting Actress in Cactus Flower (1969).
It was Penelope Cruz, who two years later became the first Spanish actress to win an Academy Award for her performance in Woody Allen" "Vicky Cristina Barcelona" (2008). She won the Oscar for Best Supporting Actress.
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1998 Judi Dench, Shakespeare in Love (Supporting Actress) [Elizabeth I] 2006 Helen Mirren, The Queen (Lead Actress) [Elizabeth II]
Katharine Hepburn won four Academy Awards during her distinguished career -- all for Best Actress.
Jack Lemmon
Hattie McDaniel was the first African-American to win Best Supporting Actress. She won for her role as Mammy in Gone with the Wind (1939).
Natalie Wood never won an Oscar, but was nominated three times. In 1956, she received a Best Supporting Actress nomination for "Rebel Without A Cause." She received two nominations for Best Actress, the first in 1962 for "Splendor in the Grass," and the second in 1964 for "Love With The Proper Stranger."
It has happened many times. Among the first timers who have accomplished the feat:Gale Sondergaard, Best Supporting Actress of 1936 for "Anthony Adverse."Katina Paxinou, Best Supporting Actress of 1943 for "For Whom the Bell Tolls."Mercedes McCambridge, Best Supporting Actress of 1949 for "All the King's Men."Shirley Booth, Best Actress of 1952 for "Come Back, Little Sheba."Eva Marie Saint, Best Supporting Actress of 1954 for "On the Waterfront."Jo Van Fleet, Best Supporting Actress of 1955 for "East of Eden."Miyoshi Umeki, Best Supporting Actress of 1957 for "Sayonara."Julie Andrews, Best Actress of 1964 for "Mary Poppins."Barbra Streisand, Best Actress of 1968 for "Funny Girl."Tatum O'Neal, Best Supporting Actress of 1974 for "Paper Moon."Timothy Hutton, Best Supporting Actor of 1980 for "Ordinary People."Dr. Haing S. Ngor, Best Supporting Actor of 1984 for "The Killing Fields."Marlee Matlin, Best Actress of 1986 for "Children of a Lesser God."Anna Paquin, Best Supporting Actress of 1993 for "The Piano."Jennifer Hudson, Best Supporting Actress of 2006 for "Dreamgirls."
The first Oscar for Best Supporting Actress was presented in 1936 to Gale Sondergaard for her role as Faith Paleologus in Anthony Adverse.
Best Supporting Actress - Hattie McDaniel was the first African-American win an Oscar. She was nominated for Best Supporting Actress, and she won for her role as Mammy in Gone with the Wind (1939).