รางวัลออสการ์ สาขาบทภาพยนตร์ดัดแปลงยอดเยี่ยม
บทภาพยนตร์ที่ได้รับรางวัลและได้รับการเสนอชื่อเข้าชิง > 1970s

| ปี | ภาพยนตร์ | นักเขียนบท | ดัดแปลงจาก |
| --- | --- | --- | --- |
1970 (43rd): 
| 1970 (43rd) | MASH | Ring Lardner Jr. | The novel MASH: A Novel About Three Army Doctors by Richard Hooker |
| 1970 (43rd) | Airport | George Seaton | The novel Airport by Arthur Hailey |
| 1970 (43rd) | I Never Sang for My Father | Robert Anderson | The play I Never Sang for My Father by Robert Anderson |
| 1970 (43rd) | Lovers and Other Strangers | Joseph Bologna David Zelag Goodman Renée Taylor | The play Lovers and Other Strangers by Joseph Bologna and Renée Taylor |
| 1970 (43rd) | Women in Love | Larry Kramer | The novel Women in Love by D. H. Lawrence |
1971 (44th): 
| 1971 (44th) | The French Connection | Ernest Tidyman | The book The French Connection: A True Account of Cops, Narcotics, and International Conspiracy by Robin Moore |
| 1971 (44th) | A Clockwork Orange | Stanley Kubrick | The novel A Clockwork Orange by Anthony Burgess |
| 1971 (44th) | The Conformist | Bernardo Bertolucci | The novel Il Conformista by Alberto Moravia |
| 1971 (44th) | The Garden of the Finzi Continis | Ugo Pirro Vittorio Bonicelli | The novel The Garden of the Finzi-Continis by Giorgio Bassani |
| 1971 (44th) | The Last Picture Show | Larry McMurtry Peter Bogdanovich | The novel The Last Picture Show by Larry McMurtry |
1972 (45th): 
| 1972 (45th) | The Godfather | Mario Puzo Francis Ford Coppola | The novel The Godfather by Mario Puzo |
| 1972 (45th) | Cabaret | Jay Presson Allen | The musical Cabaret, book by Joe Masteroff |
| 1972 (45th) | The Emigrants | Bengt Forslund Jan Troell | The novel The Emigrants by Vilhelm Moberg The novel Unto a Good Land by Vilhelm Moberg |
| 1972 (45th) | Pete 'n' Tillie | Julius J. Epstein | The story "Witch's Milk" by Peter De Vries |
| 1972 (45th) | Sounder | Lonne Elder III | The novel Sounder by William H. Armstrong |
1973 (46th): 
| 1973 (46th) | The Exorcist | William Peter Blatty | The novel The Exorcist by William Peter Blatty |
| 1973 (46th) | The Last Detail | Robert Towne | The novel The Last Detail by Darryl Ponicsan |
| 1973 (46th) | The Paper Chase | James Bridges | The novel The Paper Chase by John Jay Osborn, Jr. |
| 1973 (46th) | Paper Moon | Alvin Sargent | The novel Addie Pray by Joe David Brown |
| 1973 (46th) | Serpico | Waldo Salt Norman Wexler | The book Serpico by Peter Maas |
1974 (47th): 
| 1974 (47th) | The Godfather Part II | Francis Ford Coppola Mario Puzo | The novel The Godfather by Mario Puzo |
| 1974 (47th) | The Apprenticeship of Duddy Kravitz | Lionel Chetwynd (adaptation) Mordecai Richler (novel) | The novel The Apprenticeship of Duddy Kravitz by Mordecai Richler |
| 1974 (47th) | Lenny | Julian Barry | The play Lenny by Julian Barry |
| 1974 (47th) | Murder on the Orient Express | Paul Dehn | The novel Murder on the Orient Express by Agatha Christie |
| 1974 (47th) | Young Frankenstein | Gene Wilder Mel Brooks | The novel Frankenstein by Mary Shelley |
1975 (48th): 
| 1975 (48th) | One Flew Over the Cuckoo's Nest | Bo Goldman Laurence Hauben | The novel One Flew Over the Cuckoo's Nest by Ken Kesey |
| 1975 (48th) | Barry Lyndon | Stanley Kubrick | The novel The Memoirs of Barry Lyndon, Esq. by William Makepeace Thackeray |
| 1975 (48th) | The Man Who Would Be King | John Huston Gladys Hill | The story "The Man Who Would Be King" by Rudyard Kipling |
| 1975 (48th) | Profumo di donna | Ruggero Maccari Dino Risi | The novel Il buio e il mare by Giovanni Arpino |
| 1975 (48th) | The Sunshine Boys | Neil Simon | The play The Sunshine Boys by Neil Simon |
1976 (49th): 
| 1976 (49th) | All the President's Men | William Goldman | The book All the President's Men by Carl Bernstein and Bob Woodward |
| 1976 (49th) | Bound for Glory | Robert Getchell | The book Bound for Glory by Woody Guthrie |
| 1976 (49th) | Fellini's Casanova | Federico Fellini Bernardino Zapponi | The autobiography Histoire de ma vie by Giacomo Casanova |
| 1976 (49th) | The Seven-Per-Cent Solution | Nicholas Meyer | The novel The Seven-Per-Cent Solution by Nicholas Meyer |
| 1976 (49th) | Voyage of the Damned | David Butler Steve Shagan | The book Voyage of the Damned by Gordon Thomas; co-authored by Max Morgan Witts |
1977 (50th): 
| 1977 (50th) | Julia | Alvin Sargent | The novel Pentimento by Lillian Hellman |
| 1977 (50th) | Equus | Peter Shaffer | The play Equus by Peter Shaffer |
| 1977 (50th) | I Never Promised You a Rose Garden | Gavin Lambert Lewis John Carlino | The novel I Never Promised You a Rose Garden by Hannah Greene |
| 1977 (50th) | Oh, God! | Larry Gelbart | The novel Oh, God! by Avery Corman |
| 1977 (50th) | That Obscure Object of Desire | Luis Buñuel (scenario) Jean-Claude Carrière (collaboration) | The novel La Femme et le pantin by Pierre Louÿs |
1978 (51st): 
| 1978 (51st) | Midnight Express | Oliver Stone | The book Midnight Express by Billy Hayes and  William Hoffer |
| 1978 (51st) | Bloodbrothers | Walter Newman | The novel Bloodbrothers by Richard Price |
| 1978 (51st) | California Suite | Neil Simon | The play California Suite by Neil Simon |
| 1978 (51st) | Heaven Can Wait | Elaine May Warren Beatty | The play Heaven Can Wait by Harry Segall |
| 1978 (51st) | Same Time, Next Year | Bernard Slade | The play Same Time, Next Year by Bernard Slade |
1979 (52nd): 
| 1979 (52nd) | Kramer vs. Kramer | Robert Benton | The novel Kramer vs. Kramer by Avery Corman |
| 1979 (52nd) | Apocalypse Now | John Milius Francis Ford Coppola | The novel Heart of Darkness by Joseph Conrad |
| 1979 (52nd) | La Cage aux folles | Marcello Danon Edouard Molinaro Jean Poiret Francis Veber | The play La Cage aux Folles by Jean Poiret |
| 1979 (52nd) | A Little Romance | Allan Burns | The novel E=MC2 mon amour by Patrick Cauvin |
| 1979 (52nd) | Norma Rae | Harriet Frank, Jr. Irving Ravetch | The book Crystal Lee, a Woman of Inheritance by Hank Leiferman |