Academy Award untuk Aktris Pendukung Terbaik
Pemenang dan nominasi > 1970-an

| Tahun | Aktor | Film | Peran |
| --- | --- | --- | --- |
1970 (43rd): 
| 1970 (43rd) | Helen Hayes | Airport | Ada Quonsett |
| 1970 (43rd) | Karen Black | Five Easy Pieces | Rayette Dipesto |
| 1970 (43rd) | Lee Grant | The Landlord | Joyce Enders |
| 1970 (43rd) | Sally Kellerman | MASH | Maj. Margaret 'Hot Lips' Houlihan |
| 1970 (43rd) | Maureen Stapleton | Airport | Inez Guerrero |
1971 (44th): 
| 1971 (44th) | Cloris Leachman | The Last Picture Show | Ruth Popper |
| 1971 (44th) | Ann-Margret | Carnal Knowledge | Bobbie |
| 1971 (44th) | Ellen Burstyn | The Last Picture Show | Lois Farrow |
| 1971 (44th) | Barbara Harris | Who Is Harry Kellerman and Why Is He Saying Those Terrible Things About Me? | Allison Densmore |
| 1971 (44th) | Margaret Leighton | The Go-Between | Mrs. Maudsley |
1972 (45th): 
| 1972 (45th) | Eileen Heckart | Butterflies Are Free | Mrs. Baker |
| 1972 (45th) | Jeannie Berlin | The Heartbreak Kid | Lila Kolodny |
| 1972 (45th) | Geraldine Page | Pete 'n' Tillie | Gertrude |
| 1972 (45th) | Susan Tyrrell | Fat City | Oma |
| 1972 (45th) | Shelley Winters | The Poseidon Adventure | Belle Rosen |
1973 (46th): 
| 1973 (46th) | Tatum O'Neal | Paper Moon | Addie Loggins |
| 1973 (46th) | Linda Blair | The Exorcist | Regan MacNeil |
| 1973 (46th) | Candy Clark | American Graffiti | Debbie Dunham |
| 1973 (46th) | Madeline Kahn | Paper Moon | Trixie Delight |
| 1973 (46th) | Sylvia Sidney | Summer Wishes, Winter Dreams | Mrs. Pritchett |
1974 (47th): 
| 1974 (47th) | Ingrid Bergman | Murder on the Orient Express | Greta Ohlsson |
| 1974 (47th) | Valentina Cortese | Day for Night | Severine |
| 1974 (47th) | Madeline Kahn | Blazing Saddles | Lili Von Shtupp |
| 1974 (47th) | Diane Ladd | Alice Doesn't Live Here Anymore | Flo Castleberry |
| 1974 (47th) | Talia Shire | The Godfather Part II | Connie Corleone |
1975 (48th): 
| 1975 (48th) | Lee Grant | Shampoo | Felicia Karpf |
| 1975 (48th) | Ronee Blakley | Nashville | Barbara Jean |
| 1975 (48th) | Sylvia Miles | Farewell, My Lovely | Jessie Halstead Florian |
| 1975 (48th) | Lily Tomlin | Nashville | Linnea Reese |
| 1975 (48th) | Brenda Vaccaro | Jacqueline Susann's Once Is Not Enough | Linda Riggs |
1976 (49th): 
| 1976 (49th) | Beatrice Straight | Network | Louise Schumacher |
| 1976 (49th) | Jane Alexander | All the President's Men | Judy Hoback |
| 1976 (49th) | Jodie Foster | Taxi Driver | Iris Steensma |
| 1976 (49th) | Lee Grant | Voyage of the Damned | Lillian Rosen |
| 1976 (49th) | Piper Laurie | Carrie | Margaret White |
1977 (50th): 
| 1977 (50th) | Vanessa Redgrave | Julia | Julia |
| 1977 (50th) | Leslie Browne | The Turning Point | Emilia Rodgers |
| 1977 (50th) | Quinn Cummings | The Goodbye Girl | Lucy McFadden |
| 1977 (50th) | Melinda Dillon | Close Encounters of the Third Kind | Gillian Guiler |
| 1977 (50th) | Tuesday Weld | Looking for Mr. Goodbar | Katherine Dunn |
1978 (51st): 
| 1978 (51st) | Maggie Smith | California Suite | Diana Barrie |
| 1978 (51st) | Dyan Cannon | Heaven Can Wait | Julia Farnsworth |
| 1978 (51st) | Penelope Milford | Coming Home | Vi Munson |
| 1978 (51st) | Maureen Stapleton | Interiors | Pearl |
| 1978 (51st) | Meryl Streep | The Deer Hunter | Linda |
1979 (52nd): 
| 1979 (52nd) | Meryl Streep | Kramer vs. Kramer | Joanna Kramer |
| 1979 (52nd) | Jane Alexander | Kramer vs. Kramer | Margaret Phelps |
| 1979 (52nd) | Barbara Barrie | Breaking Away | Evelyn Stoller |
| 1979 (52nd) | Candice Bergen | Starting Over | Jessica Potter |
| 1979 (52nd) | Mariel Hemingway | Manhattan | Tracy |