1927-present: Wikipedia

YearActressMovie
2019Renée ZellwegerJudy
2018Olivia ColmanThe Favourite
2017Frances McDormandThree Billboards Outside Ebbing, Missouri
2016Emma StoneLa La Land
2015Brie LarsonRoom
2014Julianne MooreStill Alice
2013Cate BlanchettBlue Jasmine
2012Jennifer LawrenceSilver Linings Playbook
2011Meryl StreepThe Iron Lady
2010Natalie PortmanBlack Swan
2009Sandra BullockThe Blind Side
2008Kate WinsletThe Reader
2007Marion CotillardLa Vie en Rose
2006Helen MirrenThe Queen
2005Reese WitherspoonWalk the Line
2004Hilary SwankMillion Dollar Baby
2003Charlize TheronMonster
2002Nicole KidmanThe Hours
2001Halle BerryMonsters Ball
2000Julia RobertsErin Brockovich
1999Hilary SwankBoys Don’t Cry
1998Gwyneth PaltrowShakespeare in Love
1997Helen HuntAs Good as it Gets
1996Frances McDormandFargo
1995Susan SarandonDead Man Walking
1994Jessica LangeBlue Sky
1993Holly HunterThe Piano
1992Emma ThompsonHowards End
1991Jodie FosterThe Silence of the Lambs
1990Kathy BatesMisery
1989Jessica TandyDriving Miss Daisy
1988Jodie FosterThe Accused
1987CherMoonstruck
1986Marlee MatlinChildren of a Lesser God
1985Geraldine PageThe Trip to Bountiful
1984Sally FieldPlaces in the Heart
1983Shirley MacLaineTerms of Endearment
1982Meryl StreepSophie’s Choice
1971Katharine HepburnOn Golden Pond
1980Sissy SpacekCoal Miner’s Daughter
1979Sally FieldNorma Rae
1978Jane FondaComing Home
1977Diane KeatonAnnie Hall
1976Faye DunawayNetwork
1975Louise FletcherOne Flew Over the Cuckoo’s Nest
1974Ellen BurstynAlice Doesn’t Live Here Anymore
1973Glenda JacksonA Touch of Class
1972Liza MinnelliCabaret
1971Jane FondaKlute
1970Glenda JacksonWomen in Love
1969Maggie SmithThe Prime of Miss Jean Brodie
1968 (TIE)Katharine HepburnThe Lion in Winter
1968 (TIE)Barbra StreisandFunny Girl
1967Katharine HepburnGuess Who’s Coming to Dinner
1966Elizabeth TaylorWho’s Afraid of Virginia Woolf?
1965Julie ChristieDarling
1964Julie AndrewsMary Poppins
1963Patricia NealHud
1962Anne BancroftThe Miracle Worker
1961Sophia LorenTwo Women
1960Elizabeth TaylorButterfield 8
1959Simone SignoretRoom at the Top
1958Susan HaywardI Want to Live!
1957Joanne WoodwardThe Three Faces of Eve
1956Ingrid BergmanAnastasia
1955Anna MagnaniThe Rose Tattoo
1954Grace KellyThe Country Girl
1953Audrey HepburnRoman Holiday
1952Shirley BoothCome Back, Little Sheba
1951Vivien LeighA Streetcar Named Desire
1950Judy HollidayBorn Yesterday
1949Olivia de HavillandThe Heiress
1948Jane WymanJohnny Belinda
1947Loretta YoungThe Farmer’s Daughter
1946Olivia de HavillandTo Each His Own
1945Joan CrawfordMildred Pierce
1944Ingrid BergmanGaslight
1943Jennifer JonesThe Song of Bernadette
1942Greer GarsonMrs. Miniver
1941Joan FontaineSuspicion
1940Ginger RogersKitty Foyle
1939Vivien LeighGone with the Wind
1938Bette DavisJezebel
1937Luise RainerThe Good Earth
1936Luise RainerThe Great Ziegfeld
1935Bette DavisDangerous
1934Claudette ColbertIt Happened One Night
1932/33Katharine HepburnMorning Glory
1931/32Helen HayesThe Sin of Madelon Claudet
1930/31Marie DresslerMin and Bill
1929/30Norma ShearerThe Divorcee
1928/29Mary PickfordCoquette
1927/28Janet Gaynor7th Heaven / Street Angel / Sunrise