Learn about 10 best best actress Oscar winners for a rundown of the cream of the acting crop. The Oscar for best actress is presented each year at the Oscars, more formally known at the Academy Awards. The full title is the Academy of Motion Picture Arts and Sciences. The Academy Awards will hold the 83rd annual ceremony in 2011. The best actress Oscar award honors the best actress of the year in a feature film.

  1. Sandra Bullock. In 2010, Sandra Bullock won the Best Actress in a Leading Role Oscar. She portrayed Leigh Anne Tuohy in the movie "The Blind Side." Other actresses nominated for best actress were Helen Mirren, Carey Mulligan, Gabourey Sidibe, and Meryl Streep.

  2. Helen Mirren. In 2006, Helen Mirren won the Best Actress Oscar. She won for her role as the Queen of England in the movie "The Queen." Her fellow nominees for Best Actress were Penelope Cruz, Judi Dench, Meryl Streep, and Kate Winslet.

  3. Frances McDormand. In 1996, Frances McDormand won the Best Actress Oscar award. She played Marge Gunderson in the movie "Fargo." Actresses also nominated were Brenda Blethyn, Diane Keaton, Kristin Scott Thomas, and Emily Watson.

  4. Sally Field. At the 1984 Academy Awards, Sally Field won the best actress award. She portrayed Edna Spalding in "Places in the Heart." Her fellow nominees were Judy Davis, Jessica Lange, Vanessa Redgrave, and Sissy Spacek. Sally Field also won the best actress Oscar award in 1979 for the title role in the movie "Norma Rae."

  5. Meryl Streep. In 1982, Meryl Streep won the best actress award. She played Sophie in "Sophie's Choice." Other actresses nominated were Julie Andrews, Jessica Lange, Sissy Spacek, and Debra Winger.

  6. Sissy Spacek. In 1980, Sissy Spacek won the Oscar for best actress. She played Loretta Lynn in the movie "The Coal Miner's Daughter." Her fellow nominees were Ellen Burstyn, Goldie Hawn, Mary Tyler Moore, and Gena Rowlands.

  7. Elizabeth Taylor. in 1966, Elizabeth Taylor won the best actress award. She portrayed Martha in the movie "Who's Afraid of Virginia Woolf?" Other actresses nominated were Anouk Aimee, Ida Kaminska, Lynn Redgrave, and Vanessa Redgrave. Elizabeth Taylor also won the best actress award in 1960 for her role as Gloria Wandrous in "Butterfield 8."

  8. Anne Bancroft. In 1962, Anne Bancroft won the Oscar for best actress. She played Annie Sullivan in "The Miracle Worker." Other actresses nominated were Bette Davis, Katharine Hepburn, Geraldine Page, and Lee Remick.

  9. Sophia Loren. In 1961, Sophia Loren won the Oscar for best actress. She played Cesira in "Two Women." Her fellow nominees were Audrey Hepburn, Piper Laurie, Geraldine Page, and Natalie Wood.

  10. Audrey Hepburn. In 1953, Audrey Hepburn won the best actress Oscar. She played Princess Anne in "Roman Holiday." Other actresses nominated were Leslie Caron, Ava Gardner, Deborah Kerr, and Maggie McNamara.