Academy Award untuk Aktor Pendukung Terbaik
Pemenang & nominasi > 1940s

| Tahun | Aktor | Peran | Film | Ref>  |
| --- | --- | --- | --- | --- |
| 1940  (13th)  | Brennan Walter Brennan  | Bean Judge Roy Bean | Westerner The Westerner |  |
| 1940  (13th)  | Bassermann Albert Bassermann | Meer Van Meer | Foreign Correspondent |  |
| 1940  (13th)  | Gargan William Gargan | Joe | They Knew What They Wanted |  |
| 1940  (13th)  | Oakie Jack Oakie | Napaloni Benzino Napaloni (Dictator of Bacteria) | Great The Great Dictator |  |
| 1940  (13th)  | Stephenson James Stephenson | Joyce Howard Joyce | Letter The Letter |  |
| 1941  (14th)  | Crisp Donald Crisp  | Morgan Gwilym Morgan | How Green Was My Valley |  |
| 1941  (14th)  | Brennan Walter Brennan | Pile Pastor Rosier Pile | Sergeant York |  |
| 1941  (14th)  | Coburn Charles Coburn | Merrick John P. Merrick | Devil The Devil and Miss Jones |  |
| 1941  (14th)  | Gleason James Gleason | Corkle Max Corkle | Here Comes Mr. Jordan |  |
| 1941  (14th)  | Greenstreet Sydney Greenstreet | Gutman Kasper Gutman | Maltese The Maltese Falcon |  |
| 1942  (15th)  | Heflin Van Heflin  | Hartnett Jeff Hartnett | Johnny Eager |  |
| 1942  (15th)  | Bendix William Bendix | Randall Pvt. Aloysius "Smacksie" Randall | Wake Island |  |
| 1942  (15th)  | Huston Walter Huston | Cohan Jerry Cohan | Yankee Doodle Dandy |  |
| 1942  (15th)  | Morgan Frank Morgan | Pirate The Pirate | Tortilla Flat |  |
| 1942  (15th)  | Travers Henry Travers | Ballard James Ballard | Mrs. Miniver |  |
| 1943  (16th)  | Coburn Charles Coburn  | Dingle Benjamin Dingle | More The More the Merrier |  |
| 1943  (16th)  | Bickford Charles Bickford | Peyramale Father Peyramale | Song The Song of Bernadette |  |
| 1943  (16th)  | Naish J. Carrol Naish | Giuseppe | Sahara |  |
| 1943  (16th)  | Rains Claude Rains | Renault Capt. Louis Renault | Casablanca |  |
| 1943  (16th)  | Tamiroff Akim Tamiroff | Pablo | For Whom the Bell Tolls |  |
| 1944  (17th)  | Fitzgerald Barry Fitzgerald  | Fitzgibbon Father Fitzgibbon | Going My Way |  |
| 1944  (17th)  | Cronyn Hume Cronyn | Roeder Paul Roeder | Seventh The Seventh Cross |  |
| 1944  (17th)  | Rains Claude Rains | Skeffington Job Skeffington | Mr. Skeffington |  |
| 1944  (17th)  | Webb Clifton Webb | Lydecker Waldo Lydecker | Laura |  |
| 1944  (17th)  | Woolley Monty Woolley | Smollett Colonel William G. Smollett | Since You Went Away |  |
| 1945  (18th)  | Dunn James Dunn  | Nolan Johnny Nolan | Tree A Tree Grows in Brooklyn |  |
| 1945  (18th)  | Chekhov Michael Chekhov | Brulov Dr. Alexander "Alex" Brulov | Spellbound |  |
| 1945  (18th)  | Dall John Dall | Evans Morgan Evans | Corn The Corn Is Green |  |
| 1945  (18th)  | Mitchum Robert Mitchum | Walker Lt. Capt. Bill Walker | Story The Story of G.I. Joe |  |
| 1945  (18th)  | Naish J. Carrol Naish | Martin Charley Martin | Medal A Medal for Benny |  |
| 1946  (19th)  | Russell Harold Russell  | Parrish Homer Parrish | Best The Best Years of Our Lives |  |
| 1946  (19th)  | Coburn Charles Coburn | Gow Alexander Gow | Green The Green Years |  |
| 1946  (19th)  | Demarest William Demarest | Martin Steve Martin | Jolson The Jolson Story |  |
| 1946  (19th)  | Rains Claude Rains | Sebastian Alexander Sebastian | Notorious |  |
| 1946  (19th)  | Webb Clifton Webb | Templeton Elliott Templeton | Razor The Razor's Edge |  |
| 1947  (20th)  | Gwenn Edmund Gwenn  | Kringle Kris Kringle | Miracle on 34th Street |  |
| 1947  (20th)  | Bickford Charles Bickford | Clancy Joseph Clancy | Farmer The Farmer's Daughter |  |
| 1947  (20th)  | Gomez Thomas Gomez | Pancho | Ride the Pink Horse |  |
| 1947  (20th)  | Ryan Robert Ryan | Montgomery | Crossfire |  |
| 1947  (20th)  | Widmark Richard Widmark | Udo Tommy Udo | Kiss of Death |  |
| 1948  (21st)  | Huston Walter Huston  | Howard | Treasure The Treasure of the Sierra Madre |  |
| 1948  (21st)  | Bickford Charles Bickford | McDonald Black McDonald | Johnny Belinda |  |
| 1948  (21st)  | Ferrer José Ferrer | Dauphin The Dauphin – Charles VII, later King of France | Joan of Arc |  |
| 1948  (21st)  | Homolka Oskar Homolka | Halverson Uncle Chris Halverson | I Remember Mama |  |
| 1948  (21st)  | Kellaway Cecil Kellaway | Horace (A Leprechaun) | Luck The Luck of the Irish |  |
| 1949  (22nd)  | Jagger Dean Jagger  | Stovall Major Harvey Stovall | Twelve O'Clock High |  |
| 1949  (22nd)  | Ireland John Ireland | Burden Jack Burden | All the King's Men |  |
| 1949  (22nd)  | Kennedy Arthur Kennedy | Kelly Connie Kelly | Champion |  |
| 1949  (22nd)  | Richardson Ralph Richardson | Sloper Dr. Austin Sloper | Heiress The Heiress |  |
| 1949  (22nd)  | Whitmore James Whitmore | Kinnie Sgt. Kinnie | Battleground |  |