Premiul Oscar pentru cea mai bună actriță este unul dintre premiile acordate actrițelor care lucrează în industria filmului în cadrul ceremoniei Premiilor Oscar. Premiul este acordat de Academy of Motion Picture Arts and Sciences; nominalizările sunt făcute de membrii Academiei care sunt actori și actrițe.
Premiul se decernează anual începând cu 1929 pentru filmul din anul 1928. În tabelul de mai jos apar anii pentru care s-a acordat Premiul Oscar (ceremonia a avut loc în anul următor).
Anii 1920
PentruanulPortretactorCâștigătorNominalizați 1927/28 Janet Gaynor – Seventh HeavenDiane – Street AngelAngela – Sunrise: A Song of Two HumansIndreLouise Dresser – A Ship Comes In – Mrs. PleznikGloria Swanson – Sadie Thompson – Sadie Thompson 1928/29 Mary Pickford – CoquetteNorma BesantRuth Chatterton – Madame X – Jacqueline FloriotBetty Compson – The Barker – CarrieJeanne Eagels (nominalizare postumă) – The Letter – Leslie CrosbieCorinne Griffith – The Divine Lady – Emma HamiltonBessie Love – The Broadway Melody – Hank Mahoney
Anii 1930
PentruanulPortretactorCâștigătorNominalizați 1929/30 Norma Shearer – The DivorceeJerry Bernard MartinNancy Carroll – The Devil's Holiday – Hallie HobartRuth Chatterton – Sarah and Son – Sarah StormGreta Garbo – Anna Christie – Anna ChristieGreta Garbo – Romance – Madame Rita CavalliniNorma Shearer – Their Own Desire – Lucia 'Lally' MarlettGloria Swanson – The Trespasser – Marion Donnell 1930/31 Marie Dressler – Min and BillMin Divot, InnkeeperMarlene Dietrich – Morocco – Mademoiselle Amy JollyIrene Dunne – Cimarron – Sabra CravatAnn Harding – Holiday – Linda SetonNorma Shearer – Prizoniera dragostei – Jan Ashe 1931/32 Helen Hayes – The Sin of Madelon ClaudetMadelon ClaudetMarie Dressler – Emma – Emma Thatcher SmithLynn Fontanne – The Guardsman – actrița 1932/33 Katharine Hepburn – Morning GloryEva LovelaceMay Robson – Lady for a Day – Apple AnnieDiana Wynyard – Cavalcada – Jane Marryot 1934 Claudette Colbert – S-a întâmplat într-o noapteEllie AndrewsGrace Moore – One Night of Love – Mary BarrettNorma Shearer – The Barretts of Wimpole Street – Elizabeth BarrettBette Davis – Of Human Bondage – Mildred Rogers 1935 Bette Davis – DangerousJoyce HeathElisabeth Bergner – Escape Me Never – Gemma JonesClaudette Colbert – Private Worlds – dr. Jane EverestKatharine Hepburn – Alice Adams – Alice AdamsMiriam Hopkins – Becky Sharp – Becky SharpMerle Oberon – The Dark Angel – Kitty Vane 1936 Luise Rainer – Marele ZiegfeldAnna HeldIrene Dunne – Theodora Goes Wild – Theodora LynnGladys George – Valiant Is the Word for Carrie – Carrie SnyderCarole Lombard – My Man Godfrey – Irene BullockNorma Shearer – Romeo and Juliet – Julieta Capulet 1937 Luise Rainer – The Good EarthO-LanIrene Dunne – The Awful Truth – Lucy WarrinerGreta Garbo – Camille – Marguerite GautierJanet Gaynor – A Star Is Born – Esther Victoria Blodgett, aka Vicki LesterBarbara Stanwyck – Stella Dallas – Stella Martin Dallas 1938 Bette Davis – JezebelJulie MarsdenFay Bainter – White Banners – Hannah ParmaleeWendy Hiller – Pygmalion – Eliza DoolittleNorma Shearer – Marie Antoinette – Maria AntoanetaMargaret Sullavan – Three Comrades – Patricia 'Pat' Hollmann 1939 Vivien Leigh – Pe aripile vântuluiScarlett O'HaraBette Davis – Dark Victory – Judith TraherneIrene Dunne – Love Affair – Terry McKayGreta Garbo – Ninotchka – Nina Yakushova 'Ninotchka' IvanoffGreer Garson – Goodbye, Mr. Chips – Katherine
Anii 1940
PentruanulPortretactorCâștigătorNominalizați 1940 Ginger Rogers – Kitty FoyleKitty FoyleBette Davis – The Letter – Leslie CrosbieJoan Fontaine – Rebecca – Mrs. de WinterKatharine Hepburn – The Philadelphia Story – Tracy LordMartha Scott – Our Town – Emily Webb 1941 Joan Fontaine – SuspicionLina McLaidlaw AysgarthBette Davis – The Little Foxes – Regina GiddensOlivia de Havilland – Hold Back the Dawn – Emmy BrownGreer Garson – Blossoms in the Dust – Edna GladneyBarbara Stanwyck – Ball of Fire – Katherine 'Sugarpuss' O'Shea 1942 Greer Garson – D-na MiniverKay MiniverBette Davis – Now, Voyager – Charlotte ValeKatharine Hepburn – Woman of the Year – Tess HardingRosalind Russell – My Sister Eileen – Ruth SherwoodTeresa Wright – The Pride of the Yankees – Eleanor Twitchell Gehrig 1943 Jennifer Jones – Cântecul BernadetteiBernadette SoubirousJean Arthur – The More the Merrier – Constance "Connie" MilliganIngrid Bergman – For Whom the Bell Tolls – MaríaJoan Fontaine – The Constant Nymph – Tessa SangerGreer Garson – Madame Curie – Marie Curie 1944 Ingrid Bergman – GaslightPaula Alquist AntonClaudette Colbert – Since You Went Away – Anne HiltonBette Davis – Mr. Skeffington – Fanny TrellisGreer Garson – Mrs. Parkington – Susie 'Sparrow' ParkingtonBarbara Stanwyck – Double Indemnity – Phyllis Dietrichson 1945 Joan Crawford – Mildred PierceMildred Pierce BeragonIngrid Bergman – The Bells of St. Mary's – Mary BenedictGreer Garson – The Valley of Decision – Mary RaffertyJennifer Jones – Love Letters – SingletonGene Tierney – Leave Her to Heaven – Ellen Berent Harland 1946 Olivia de Havilland – To Each His OwnJosephine 'Jody' NorrisCelia Johnson – Scurtă întâlnire – Laura JessonJennifer Jones – Duel in the Sun – Pearl ChavezRosalind Russell – Sister Kenny – Elizabeth KennyJane Wyman – The Yearling – Orry Baxter 1947 Loretta Young – The Farmer's DaughterKatie HolstromJoan Crawford – Possessed – Louise HowellSusan Hayward – Smash-Up, the Story of a Woman – Angelica Evans ConwayDorothy McGuire – Pe cuvânt de onoare – Kathy LacyRosalind Russell – Mourning Becomes Electra – Lavinia Mannon 1948 Jane Wyman – Johnny BelindaBelinda McDonaldIngrid Bergman – Joan of Arc – Ioana d'ArcOlivia de Havilland – The Snake Pit – Virginia Stuart CunninghamIrene Dunne – I Remember Mama – Martha HansonBarbara Stanwyck – Sorry, Wrong Number – Leona Stevenson 1949 Olivia de Havilland – The HeiressCatherine SloperJeanne Crain – Pinky – Patricia 'Pinky' JohnsonSusan Hayward – My Foolish Heart – Eloise WintersDeborah Kerr – Edward, My Son – Evelyn BoultLoretta Young – Come to the Stable – sora Margaret
Anii 1950
PentruanulPortretactorCâștigătorNominalizați 1950 Judy Holliday – Born YesterdayEmma 'Billie' DawnAnne Baxter – Totul despre Eva – Eve HarringtonBette Davis – Totul despre Eva – Margo ChanningEleanor Parker – Caged – Marie AllenGloria Swanson – Bulevardul amurgului – Norma Desmond 1951 Vivien Leigh – Un tramvai numit dorințăBlanche DuBoisKatharine Hepburn – Regina africană – Rose SayerEleanor Parker – Detective Story – Mary McLeodShelley Winters – A Place in the Sun – Alice TrippJane Wyman – The Blue Veil – Louise Mason 1952 Shirley Booth – Come Back, Little ShebaLola DelaneyJoan Crawford – Sudden Fear – Myra HudsonBette Davis – The Star – Margaret ElliotJulie Harris – The Member of the Wedding – Frances 'Frankie' AddamsSusan Hayward – With a Song in My Heart – Jane Froman 1953 Audrey Hepburn – Roman HolidayPrințesa AnnLeslie Caron – Lili – Lili DaurierAva Gardner – Mogambo – Eloise "Honey Bear" KellyDeborah Kerr – De aici în eternitate – Karen HolmesMaggie McNamara – The Moon Is Blue – Patty O'Neill 1954 Grace Kelly – The Country GirlGeorgie ElginDorothy Dandridge – Carmen Jones – Carmen JonesJudy Garland – A Star Is Born – Vicki Lester / Esther BlodgettAudrey Hepburn – Sabrina – Sabrina FairchildJane Wyman – Magnificent Obsession – Helen Phillips 1955 Anna Magnani – The Rose TattooSerafina Delle RoseSusan Hayward – I'll Cry Tomorrow – Lillian RothKatharine Hepburn – Summertime – Jane HudsonJennifer Jones – Love Is a Many-Splendored Thing – dr. Han SuyinEleanor Parker – Interrupted Melody – Marjorie 'Margie' Lawrence 1956 Ingrid Bergman – AnastasiaAnna Koreff / AnastasiaCarroll Baker – Baby Doll – Baby Doll MeighanKatharine Hepburn – The Rainmaker – Lizzie CurryNancy Kelly – The Bad Seed – Christine PenmarkDeborah Kerr – The King and I – Anna Leonowens 1957 Joanne Woodward – The Three Faces of EveEve White / Eve Black / JaneDeborah Kerr – Heaven Knows, Mr. Allison – sora AngelaAnna Magnani – Wild Is the Wind – GioiaElizabeth Taylor – Raintree County – Susanna DrakeLana Turner – Peyton Place – Constance MacKenzie 1958 Susan Hayward – I Want to Live!Barbara GrahamDeborah Kerr – Separate Tables – Sibyl Railton-BellShirley MacLaine – Some Came Running – Ginnie MooreheadRosalind Russell – Auntie Mame – Mame DennisElizabeth Taylor – Cat on a Hot Tin Roof – Margaret 'Maggie the Cat' Pollitt 1959 Simone Signoret – Room at the TopAlice AisgillDoris Day – Pillow Talk – Jan MorrowAudrey Hepburn – The Nun's Story – sora Luke (Gabrielle van der Mal)Katharine Hepburn – Suddenly, Last Summer – Violet VenableElizabeth Taylor – Suddenly, Last Summer – Catherine Holly
Anii 1960
PentruanulPortretactorCâștigătorNominalizați 1960 Elizabeth Taylor – BUtterfield 8Gloria WandrousGreer Garson – Sunrise at Campobello – Eleanor RooseveltDeborah Kerr – The Sundowners – Ida CarmodyShirley MacLaine – Apartamentul – Fran KubelikMelina Mercouri – Never on Sunday – Ilya 1961 Sophia Loren – CiociaraCesiraAudrey Hepburn – Micul dejun la Tiffany – Holly GolightlyPiper Laurie – Escrocul – Sarah PackardGeraldine Page – Summer and Smoke – Alma WinemillerNatalie Wood – Splendoare în iarbă – Wilma Dean 'Deanie' Loomis 1962 Anne Bancroft – The Miracle WorkerAnnie SullivanBette Davis – Ce s-a întâmplat cu Baby Jane? – Baby Jane HudsonKatharine Hepburn – Long Day's Journey Into Night – Mary TyroneGeraldine Page – Dulcea pasăre a tinereții – Alexandra Del LagoLee Remick – Days of Wine and Roses – Kirsten Arnesen Clay 1963 Patricia Neal – HudAlma BrownLeslie Caron – The L-Shaped Room – Jane FossettShirley MacLaine – Irma la Douce – Irma la DouceRachel Roberts – Viața sportivă – Margaret HammondNatalie Wood – Love with the Proper Stranger – Angie Rossini 1964 Julie Andrews – Mary PoppinsMary PoppinsAnne Bancroft – The Pumpkin Eater – Jo ArmitageSophia Loren – Marriage Italian-Style – Filumena MarturanoDebbie Reynolds – The Unsinkable Molly Brown – Molly BrownKim Stanley – Séance on a Wet Afternoon – Myra Savage 1965 Julie Christie – DarlingDiana ScottJulie Andrews – Sunetul muzicii – Maria von TrappeSamantha Eggar – The Collector – Miranda GreyElizabeth Hartman – A Patch of Blue – Selina D'ArcySimone Signoret – Ship of Fools – contesa 1966 Elizabeth Taylor – Cui i-e frică de Virginia Woolf?MarthaAnouk Aimée – Un bărbat și o femeie – Anne GauthierIda Kaminska – Magazinul de pe strada mare – Rozalie LautmannLynn Redgrave – Georgy Girl – Georgina 'Georgy' ParkinVanessa Redgrave – Morgan! – Leonie Delt 1967 Katharine Hepburn – Ghici cine vine la cină?Christina DraytonAnne Bancroft – Absolventul – Mrs. RobinsoneFaye Dunaway – Bonnie și Clyde – Bonnie ParkerEdith Evans – The Whisperers – Maggie RossAudrey Hepburn – Wait Until Dark – Susy Hendrix1968 Barbra Streisand – Funny GirlFanny BricePatricia Neal – The Subject was Roses – Nettie ClearyrVanessa Redgrave – Isadora – Isadora DuncanJoanne Woodward – Rachel, Rachel – Rachel Cameron Katharine Hepburn – The Lion in WinterEleanor de Aquitania 1969 Maggie Smith – The Prime of Miss Jean BrodieJean BrodieGeneviève Bujold – Anne of the Thousand Days – Anne BoleynJane Fonda – They Shoot Horses, Don't They? – Gloria BeattyLiza Minnelli – The Sterile Cuckoo – Mary Ann 'Pookie' AdamsJean Simmons – The Happy Ending – Mary Wilson
Anii 1970