รางวัลออสการ์ สาขานักแสดงนำหญิงยอดเยี่ยม
ผู้ได้รับรางวัลและได้รับการเสนอชื่อเข้าชิง > คริสต์ทศวรรษ 1940

| ปี | นักแสดง | บทบาท | ภาพยนตร์ | อ้างอิง |
| --- | --- | --- | --- | --- |
1940s
| 1940  (13th)  | Rogers !Ginger Rogers ‡ | Foyle !Kitty Foyle | Kitty Foyle |  |
| 1940  (13th)  | Davis !Bette Davis | Crosbie !Leslie Crosbie | Letter !The Letter |  |
| 1940  (13th)  | Fontaine !Joan Fontaine | de Winter !The Second Mrs. de Winter | Rebecca |  |
| 1940  (13th)  | Hepburn !Katharine Hepburn | Lord !Tracy Lord | Philadelphia !The Philadelphia Story |  |
| 1940  (13th)  | Scott !Martha Scott | Webb !Emily Webb | Our Town |  |
| 1941  (14th)  | Fontaine !Joan Fontaine ‡ | Aysgarth !Lina McLaidlaw Aysgarth | Suspicion |  |
| 1941  (14th)  | Davis !Bette Davis | Giddens !Regina Giddens | Little !The Little Foxes |  |
| 1941  (14th)  | de Havilland !Olivia de Havilland | Brown !Emmy Brown | Hold Back the Dawn |  |
| 1941  (14th)  | Garson !Greer Garson | Gladney !Edna Gladney | Blossoms in the Dust |  |
| 1941  (14th)  | Stanwyck !Barbara Stanwyck | O'Shea !Katherine "Sugarpuss" O'Shea | Ball of Fire |  |
| 1942  (15th)  | Garson !Greer Garson ‡ | Miniver !Kay Miniver | Mrs. Miniver |  |
| 1942  (15th)  | Davis !Bette Davis | Vale !Charlotte Vale | Now, Voyager |  |
| 1942  (15th)  | Hepburn !Katharine Hepburn | Harding !Tess Harding | Woman of the Year |  |
| 1942  (15th)  | Russell !Rosalind Russell | Sherwood !Ruth Sherwood | My Sister Eileen |  |
| 1942  (15th)  | Wright !Teresa Wright | Gerhig !Eleanor Twitchell Gehrig | Pride !The Pride of the Yankees |  |
| 1943  (16th)  | Jones !Jennifer Jones ‡ | Soubirous !Bernadette Soubirous | Song !The Song of Bernadette |  |
| 1943  (16th)  | Arthur !Jean Arthur | Milligan !Constance "Connie" Milligan | More !The More the Merrier |  |
| 1943  (16th)  | Bergman !Ingrid Bergman | María | For Whom the Bell Tolls |  |
| 1943  (16th)  | Fontaine !Joan Fontaine | Sanger !Tessa Sanger | Constant !The Constant Nymph |  |
| 1943  (16th)  | Garson !Greer Garson | Curie !Marie Curie | Madame Curie |  |
| 1944  (17th)  | Bergman !Ingrid Bergman ‡ | Paula Alquist Anton | Gaslight |  |
| 1944  (17th)  | Colbert !Claudette Colbert | Hilton !Anne Hilton | Since You Went Away |  |
| 1944  (17th)  | Davis !Bette Davis | Trellis ! Fanny Trellis | Mr. Skeffington |  |
| 1944  (17th)  | Garson !Greer Garson | Parkington !Susie "Sparrow" Parkington | Mrs. Parkington |  |
| 1944  (17th)  | Stanwyck !Barbara Stanwyck | Dietrichson !Phyllis Dietrichson | Double Indemnity |  |
| 1945  (18th)  | Crawford !Joan Crawford ‡ | Beragon !Mildred Pierce Beragon | Mildred Pierce |  |
| 1945  (18th)  | Bergman !Ingrid Bergman | Benedict !Mary Benedict | Bells !The Bells of St. Mary's |  |
| 1945  (18th)  | Garson !Greer Garson | Rafferty !Mary Rafferty | Valley !The Valley of Decision |  |
| 1945  (18th)  | Jones !Jennifer Jones | Singleton | Love Letters |  |
| 1945  (18th)  | Tierney !Gene Tierney | Harland !Ellen Berent Harland | Leave Her to Heaven |  |
| 1946  (19th)  | de Havilland !Olivia de Havilland ‡ | Norris !Josephine "Jody" Norris | To Each His Own |  |
| 1946  (19th)  | Johnson !Celia Johnson | Jesson !Laura Jesson | Brief Encounter |  |
| 1946  (19th)  | Jones !Jennifer Jones | Chavez !Pearl Chavez | Duel in the Sun |  |
| 1946  (19th)  | Russell !Rosalind Russell | KEnny !Elizabeth Kenny | Sister Kenny |  |
| 1946  (19th)  | Wyman !Jane Wyman | Baxter !Orry Baxter | Yearling !The Yearling |  |
| 1947  (20th)  | Young !Loretta Young ‡ | Holstrom !Katie Holstrom | Farmer's !The Farmer's Daughter |  |
| 1947  (20th)  | Crawford !Joan Crawford | Howell !Louise Howell | Possessed |  |
| 1947  (20th)  | Hayward !Susan Hayward | Conway !Angelica Evans Conway | Smash-Up, the Story of a Woman |  |
| 1947  (20th)  | McGuire !Dorothy McGuire | Lacy !Kathy Lacy | Gentleman's Agreement |  |
| 1947  (20th)  | Russell !Rosalind Russell | Mannon !Lavinia Mannon | Mourning Becomes Electra |  |
| 1948  (21st)  | Wyman !Jane Wyman ‡ | McDonald !Belinda McDonald | Johnny Belinda |  |
| 1948  (21st)  | Bergman !Ingrid Bergman | Joan of Arc | Joan of Arc |  |
| 1948  (21st)  | de Havilland !Olivia de Havilland | Cunningham !Virginia Stuart Cunningham | Snake !The Snake Pit |  |
| 1948  (21st)  | Dunne !Irene Dunne | Hanson !Martha Hanson | I Remember Mama |  |
| 1948  (21st)  | Stanwyck !Barbara Stanwyck | Stevenson !Leona Stevenson | Sorry, Wrong Number |  |
| 1949  (22nd)  | de Havilland !Olivia de Havilland ‡ | Sloper !Catherine Sloper | Heiress !The Heiress |  |
| 1949  (22nd)  | Crain !Jeanne Crain | Johnson !Patricia "Pinky" Johnson | Pinky |  |
| 1949  (22nd)  | Hayward !Susan Hayward | Winters !Eloise Winters | My Foolish Heart |  |
| 1949  (22nd)  | Kerr !Deborah Kerr | Boult !Evelyn Boult | Edward, My Son |  |
| 1949  (22nd)  | Young !Loretta Young | Margaret | Come to the Stable |  |