All information is taken from the Academy Awards Database
I have seen the movies in red.
1927/28 - Janet Gaynor - 7th Heaven; Street Angel; and Sunrise (Actress)
1928/29 - Mary Pickford - Coquette (Actress)
1929/30 - Norma Shearer - The Divorcee (Actress)
1930/31 - Marie Dressler - Min and Bill (Actress)
1931/32 - Helen Hayes - The Sin of Madelon Claudet (Actress)
1932/33 - Katharine Hepburn - Morning Glory
1934 - Claudette Colbert - It Happened One Night (Actress)
1935 - Bette Davis - Dangerous (Actress)
1936 - Luise Rainer - The Great Ziegfeld (Actress)
1937 - Luise Rainer - The Good Earth (Actress)
1938 - Bette Davis - Jezebel (Actress)
1939 - Vivien Leigh - Gone with the Wind (Actress)
1940 - Ginger Rogers - Kitty Foyle (Actress)
1941 - Joan Fontaine - Suspicion (Actress)
1942 - Greer Garson - Mrs. Miniver (Actress)
1943 - Jennifer Jones - The Song of Bernadette (Actress)
1944 - Ingrid Bergman - Gaslight (Actress)
1945 - Joan Crawford - Mildred Pierce (Actress)
1946 - Olivia de Havilland - To Each His Own (Actress)
1947 - Loretta Young - The Farmer's Daughter (Actress)
1948 - Jane Wyman - Johnny Belinda (Actress)
1949 - Olivia de Havilland - The Heiress (Actress)
1950 - Judy Holliday - Born Yesterday (Actress)
1951 - Vivien Leigh - A Streetcar Named Desire (Actress)
1952 - Shirley Booth - Come Back, Little Sheba (Actress)
1953 - Audrey Hepburn - Roman Holiday (Actress)
1954 - Grace Kelly - The Country Girl (Actress)
1955 - Anna Magnani - The Rose Tattoo (Actress)
1956 - Ingrid Bergman - Anastasia (Actress)
1957 - Joanne Woodward - The Three Faces of Eve (Actress)
1958 - Susan Hayward - I Want to Live! (Actress)
1959 - Simone Signoret - Room at the Top (Actress)
1960 - Elizabeth Taylor - Butterfield 8 (Actress)
1961 - Sophia Loren - Two Women (Actress)
1962 - Anne Bancroft - The Miracle Worker (Actress)
1963 - Patricia Neal - Hud (Actress)
1964 - Julie Andrews - Mary Poppins (Actress)
1965 - Julie Christie - Darling (Actress)
1966 - Elizabeth Taylor - Who's Afraid of Virginia Woolf? (Actress)
1967 - Katharine Hepburn - Guess Who's Coming to Dinner (Actress)
1968 - (TIE) Katharine Hepburn - The Lion in Winter and Barbra Streisand - Funny Girl (Actress)
1969 - Maggie Smith - The Prime of Miss Jean Brodie (Actress)
1970 - Glenda Jackson - Women in Love (Actress)
1971 - Jane Fonda - Klute (Actress)
1972 - Liza Minnelli - Cabaret (Actress)
1973 - Glenda Jackson - A Touch of Class (Actress)
1974 - Ellen Burstyn - Alice Doesn't Live Here Anymore (Actress)
1975 - Louise Fletcher - One Flew over the Cuckoo's Nest (Actress)
1976 - Faye Dunaway - Network
1977 - Diane Keaton - Annie Hall
1978 - Jane Fonda - Coming Home
1979 - Sally Field - Norma Rae
1980 - Sissy Spacek - Coal Miner's Daughter
1981 - Katharine Hepburn - On Golden Pond
1982 - Meryl Streep - Sophie's Choice
1983 - Shirley MacLaine - Terms of Endearment
1984 - Sally Field - Places in the Heart
1985 - Geraldine Page - The Trip to Bountiful
1986 - Marlee Matlin - Children of a Lesser God
1987 - Cher - Moonstruck
1988 - Jodie Foster - The Accused
1989 - Jessica Tandy - Driving Miss Daisy
1990 - Kathy Bates - Misery
1991 - Jodie Foster - The Silence of the Lambs
1992 - Emma Thompson - Howards End
1993 - Holly Hunter - The Piano
1994 - Jessica Lange - Blue Sky
1995 - Susan Sarandon - Dead Man Walking
1996 - Frances McDormand - Fargo
1997 - Helen Hunt - As Good as It Gets
1998 - Gwyneth Paltrow - Shakespeare in Love
1999 - Hilary Swank - Boys Don't Cry
2000 - Julia Roberts - Erin Brockovich
2001 - Halle Berry - Monster's Ball
2002 - Nicole Kidman - The Hours
2003 - Charlize Theron - Monster
2004 - Hilary Swank - Million Dollar Baby
2005 - Reese Witherspoon - Walk the Line
2006 - Helen Mirren - The Queen
2007 - Marion Cotillard - La Vie en Rose
2008 - Kate Winslet - The Reader
2009 - Sandra Bullock - The Blind Side
2010 - Natalie Portman - Black Swan
