In many ways the most successful and familiar character actor of American sound films and the only actor to date to win three Oscars for Best Supporting Actor, Walter Brennan attended college in Cambridge, Massachusetts, studying engineering. While in school he became interested in acting and performed in school plays. He worked some in vaudeville and also in various jobs such as clerking in a bank and as a lumberjack. He toured in small musical comedy companies before entering the military in 1917. After his war service he went to Guatemala and raised pineapples, then migrated to Los Angeles, where he speculated in real estate. A few jobs as a film extra came his way beginning in 1923, then some work as a stuntman. He eventually achieved speaking roles, going from bit parts to substantial supporting parts in scores of features and short subjects between 1927 and 1938. In 1936 his role in Come and Get It (1936) won him the very first Best Supporting Actor Academy Award. He would win it twice more in the decade, and be nominated for a fourth. His range was enormous. He could play sophisticated businessmen, con artists, local yokels, cowhands and military officers with apparent equal ease. An accident in 1932 cost him most of his teeth, and he most often was seen in eccentric rural parts, often playing characters much older than his actual age. His career never really declined, and in the 1950s he became an even more endearing and familiar figure in several television series, most famously The Real McCoys (1957). He died in 1974 of emphysema, a beloved figure in movies and TV, the target of countless comic impressionists, and one of the best and most prolific actors of his time.
| Movie | And the Oscar Goes To... | Self (archive footage) | 2014-02-01 |
| Movie | Bogart: The Untold Story | Self (archive footage) | 1997-01-05 |
| Movie | The Silver Screen: Color Me Lavender | Self (archive footage) | 1997-11-01 |
| Movie | La Classe américaine | 'Stumpy' (archive footage) | 1993-12-31 |
| Movie | Smoke In The Wind | H. P. Kingman | 1975-04-01 |
| Movie | Home for the Holidays | Benjamin Morgan | 1974-07-13 |
| Movie | The Men Who Made the Movies: Howard Hawks | Self (archive footage) | 1973-01-01 |
| Movie | Two for the Money | Cody Guilford | 1972-02-26 |
| Series | Alias Smith and Jones | Unknown | 1971-01-05 |
| Movie | The Day They Hanged Kid Curry | Silky O'Sullivan | 1971-09-16 |
| Movie | The Young Country | Sheriff Matt Fenley | 1970-03-17 |
| Movie | The Over-the-Hill Gang Rides Again | Nash Crawford | 1970-11-16 |
| Series | The Glen Campbell Goodtime Hour | Unknown | 1969-01-22 |
| Movie | Support Your Local Sheriff! | Pa Danby | 1969-03-26 |
| Series | To Rome with Love | Andy Pruitt | 1969-09-28 |
| Movie | The Over the Hill Gang | Nash Crawford | 1969-07-06 |
| Movie | The Movie Orgy | Self (archive footage) | 1968-01-01 |
| Movie | The One and Only, Genuine, Original Family Band | Grandpa Bower | 1968-04-19 |
| Movie | The Gnome-Mobile | D.J. Mulrooney / Knobby | 1967-07-19 |
| Series | The Guns of Will Sonnett | Will Sonnett | 1967-09-08 |
| Movie | Who's Minding the Mint? | Pop Gillis | 1967-09-26 |
| Movie | The Oscar | Quentin | 1966-03-04 |
| Movie | The Shooting of Dan McGrew | Narrator | 1965-01-01 |
| Movie | Those Calloways | Alf Simes | 1964-11-10 |
| Movie | Shootout at Big Sag | 'Preacher' Hawker | 1962-05-31 |
| Movie | How the West Was Won | Col. Jeb Hawkins | 1962-11-02 |
| Movie | Rio Bravo | Stumpy | 1959-03-18 |
| Movie | God Is My Partner | Dr. Charles Grayson | 1957-07-01 |
| Movie | Tammy and the Bachelor | John Dinwitty | 1957-06-14 |
| Series | The Real McCoys | Amos McCoy | 1957-10-03 |
| Movie | Come Next Spring | Jeffrey Storys | 1956-03-09 |
| Movie | Glory | Ned Otis | 1956-01-11 |
| Movie | Good-bye, My Lady | Uncle Jesse Jackson | 1956-05-12 |
| Series | The Dinah Shore Chevy Show | Unknown | 1956-10-05 |
| Movie | The Proud Ones | Jake | 1956-05-15 |
| Series | Dick Powell's Zane Grey Theatre | Unknown | 1956-10-05 |
| Movie | Bad Day at Black Rock | Doc T.R. Velie Jr. | 1955-01-13 |
| Movie | Man on a Bus | Saul | 1955-05-01 |
| Movie | At Gunpoint | Doc Lacy | 1955-12-25 |
| Movie | Drums Across the River | Sam Brannon | 1954-06-01 |
| Movie | The Far Country | Ben Tatum | 1954-02-12 |
| Movie | Four Guns to the Border | Simon Bhumer | 1954-11-05 |
| Series | The Oscars | Unknown | 1953-03-19 |
| Movie | Return of the Texan | Grandpa Firth Crockett | 1952-02-13 |
| Movie | Lure of the Wilderness | Jim Harper | 1952-07-16 |
| Series | This Is Your Life | Unknown | 1952-10-01 |
| Series | Cavalcade of America | Unknown | 1952-10-01 |
| Movie | Best of the Badmen | 'Doc' Butcher | 1951-08-09 |
| Movie | Along the Great Divide | Timothy 'Pop' Keith | 1951-06-02 |
| Series | Schlitz Playhouse of Stars | Unknown | 1951-10-05 |
| Movie | The Wild Blue Yonder | Maj. Gen. Wolfe | 1951-12-05 |
| Movie | Singing Guns | Dr. Jonathan Mark | 1950-02-28 |
| Movie | Curtain Call at Cactus Creek | Rimrock | 1950-05-25 |
| Movie | A Ticket to Tomahawk | Terence Sweeny | 1950-05-19 |
| Movie | Surrender | Sheriff Bill Howard | 1950-09-15 |
| Movie | The Showdown | Cap MacKellar | 1950-08-15 |
| Movie | The Green Promise | Mr. Matthews | 1949-03-22 |
| Movie | Task Force | Pete Richard | 1949-08-30 |
| Movie | Brimstone | Pop Courteen | 1949-08-15 |
| Movie | Scudda Hoo! Scudda Hay! | Tony Maule | 1948-03-10 |
| Movie | Red River | 'Groot' Nadine | 1948-09-17 |
| Movie | Blood on the Moon | Kris Barden | 1948-11-11 |
| Movie | Driftwood | Murph | 1947-09-15 |
| Movie | Centennial Summer | Jesse Rogers | 1946-07-10 |
| Movie | A Stolen Life | Eben Folger | 1946-05-01 |
| Movie | Nobody Lives Forever | Pop Gruber | 1946-11-01 |
| Movie | My Darling Clementine | Old Man Clanton | 1946-10-17 |
| Movie | To Have and Have Not | Eddie | 1945-01-20 |
| Movie | Dakota | Bounce of the Riverbird | 1945-12-15 |
| Movie | Home in Indiana | J. F. 'Thunder' Bolt | 1944-06-15 |
| Movie | The Princess and the Pirate | Featherhead | 1944-11-17 |
| Movie | Hangmen Also Die! | Prof. Stephen Novotny | 1943-04-15 |
| Movie | Slightly Dangerous | Cornelius Burden | 1943-04-01 |
| Movie | The North Star | Karp | 1943-11-04 |
| Movie | The Pride of the Yankees | Sam Blake | 1942-07-14 |
| Movie | Stand by for Action | Chief Yeoman Henry Johnson | 1942-12-31 |
| Movie | Meet John Doe | The Colonel | 1941-03-14 |
| Movie | Nice Girl? | Hector Titus | 1941-02-21 |
| Movie | This Woman Is Mine | Captain Jonathan Thorne | 1941-08-22 |
| Movie | Breakdowns of 1941 | Self (archive footage) (uncredited) | 1941-11-14 |
| Movie | Rise and Shine | Grandpa | 1941-11-21 |
| Movie | Swamp Water | Tom Keefer | 1941-11-16 |
| Movie | Sergeant York | Pastor Rosier Pile | 1941-09-27 |
| Movie | Northwest Passage | 'Hunk' Marriner | 1940-02-23 |
| Movie | Maryland | William P. Stewart | 1940-07-19 |
| Movie | The Westerner | Judge Roy Bean | 1940-09-18 |
| Movie | The Story of Vernon and Irene Castle | Walter | 1939-03-29 |
| Movie | Stanley and Livingstone | Jeff Slocum | 1939-08-18 |
| Movie | They Shall Have Music | Professor Lawson | 1939-08-18 |
| Movie | Joe and Ethel Turp Call on the President | Jim | 1939-12-01 |
| Movie | The Adventures of Tom Sawyer | Muff Potter | 1938-02-11 |
| Movie | The Buccaneer | Ezra Peavey | 1938-02-04 |
| Movie | Mother Carey's Chickens | Ossian Popham | 1938-07-29 |
| Movie | Kentucky | Peter Goodwin | 1938-12-30 |
| Movie | The Texans | Chuckawalla | 1938-08-12 |
| Movie | The Cowboy and the Lady | Sugar | 1938-11-17 |
| Movie | She's Dangerous | 'Oats' | 1937-01-24 |
| Movie | When Love Is Young | Uncle Hugo | 1937-03-26 |
| Movie | Affairs of Cappy Ricks | Cappy Ricks | 1937-05-24 |
| Movie | Wild and Woolly | Gramp 'Hercules' Flynn | 1937-07-19 |
| Movie | These Three | Taxi Driver | 1936-03-18 |
| Movie | The Moon's Our Home | Lem | 1936-04-10 |
| Movie | Three Godfathers | Samuel 'Gus' Barton | 1936-03-06 |
| Movie | Fury | Bugs Meyers | 1936-06-05 |
| Movie | Banjo on My Knee | Newt Holley | 1936-12-11 |
| Movie | Come and Get It | Swan Bostrom | 1936-11-06 |
| Movie | Law Beyond the Range | Abner | 1935-02-15 |
| Movie | Restless Knights | Father (uncredited) | 1935-02-20 |
| Movie | The Mystery of Edwin Drood | Milkman (uncredited) | 1935-02-04 |
| Movie | The Wedding Night | Bill Jenkins | 1935-03-08 |
| Movie | Brick-a-Brac | Lem | 1935-01-18 |
| Movie | Bride of Frankenstein | Peasant (uncredited) | 1935-04-20 |
| Movie | Biography of a Bachelor Girl | Reporter on Ship (uncredited) | 1935-01-04 |
| Movie | Northern Frontier | Stuttering Cook | 1935-02-01 |
| Movie | West Point of the Air | Soldier at Kelly's Wreckage | 1935-03-23 |
| Movie | She Couldn't Take It | Peddler | 1935-10-08 |
| Movie | Barbary Coast | Old Atrocity | 1935-10-13 |
| Movie | Metropolitan | Grandpa | 1935-10-17 |
| Movie | We're in the Money | Wedding Witness (uncredited) | 1935-08-17 |
| Movie | Seven Keys to Baldpate | Station Agent | 1935-12-13 |
| Movie | Man on the Flying Trapeze | 'Legs' Garnett | 1935-08-03 |
| Movie | Party Wire | Paul - Railroad Telegrapher (uncredited) | 1935-04-27 |
| Movie | Lady Tubbs | Joseph | 1935-07-02 |
| Movie | George White's Scandals | Hick (uncredited) | 1934-03-15 |
| Movie | Good Dame | Elmer Spicer | 1934-03-16 |
| Movie | I'll Tell the World | Otto - Bicycle Repair Man | 1934-04-20 |
| Movie | The Poor Rich | Dr. Johnson the Coroner (uncredited) | 1934-02-25 |
| Movie | Riptide | Chauffeur (uncredited) | 1934-03-29 |
| Movie | Beloved | Stuttering Boarder | 1934-01-22 |
| Movie | Woman Haters | Train Conductor (uncredited) | 1934-05-05 |
| Movie | Fugitive Lovers | 2nd Bus Driver (uncredited) | 1934-01-05 |
| Movie | Cross Country Cruise | Niagara Falls Boatman (Uncredited) | 1934-01-16 |
| Movie | Radio Dough | Drunk Customer (uncredited) | 1934-02-05 |
| Movie | Cheating Cheaters | Ship's Telegrapher (uncredited) | 1934-11-05 |
| Movie | Great Expectations | Prisoner on Ship | 1934-10-22 |
| Movie | There's Always Tomorrow | Auto mechanic | 1934-11-01 |
| Movie | Half a Sinner | Radio Announcer | 1934-06-01 |
| Movie | Prescott Kid | Zeke - Stage Driver | 1934-11-08 |
| Movie | Gridiron Flash | Proprietor of Java Joe's | 1934-10-06 |
| Movie | Death on the Diamond | Hot Dog Vendor (uncredited) | 1934-09-14 |
| Movie | Murder in the Private Car | Switchman (uncredited) | 1934-06-29 |
| Movie | The Life of Vergie Winters | Roscoe (uncredited) | 1934-06-14 |
| Movie | Whom the Gods Destroy | Clifford | 1934-07-12 |
| Movie | Lucky Dog | Drunk #2 | 1933-04-20 |
| Movie | The Phantom of the Air | 'Skid' (uncredited) | 1933-05-21 |
| Movie | The Big Cage | Ticket Taker | 1933-05-01 |
| Movie | Strange People | The Radio Repairman | 1933-06-16 |
| Movie | Man Of Action | Cashier Summers | 1933-01-20 |
| Movie | Goldie Gets Along | Stuttering Waiter | 1933-01-27 |
| Movie | Parachute Jumper | Counterman at Jewel Diner (uncredited) | 1933-01-28 |
| Movie | Girl Missing | Joe, Garage Attendant (Uncredited) | 1933-03-04 |
| Movie | Saturday's Millions | Reporter | 1933-09-30 |
| Movie | The Invisible Man | Bicycle Owner (uncredited) | 1933-11-03 |
| Movie | One Year Later | Man Chuckling at Train Station | 1933-08-24 |
| Movie | My Woman | Auditioning Man Who Does Animal Sounds (Uncredited) | 1933-10-04 |
| Movie | King for a Night | Soda Jerk | 1933-12-09 |
| Movie | Sensation Hunters | Stuttering Waiter | 1933-08-30 |
| Movie | Golden Harvest | Farmhand at Wedding (uncredited) | 1933-09-21 |
| Movie | Curtain at Eight | Backstage Detective [extra] | 1933-10-01 |
| Movie | Scandal for Sale | Newspaperman | 1932-04-01 |
| Movie | Miss Pinkerton | Police Dispatcher (uncredited) | 1932-05-27 |
| Movie | The Airmail Mystery | Holly | 1932-03-28 |
| Movie | Law and Order | Lanky Smith (uncredited) | 1932-02-09 |
| Movie | Two-Fisted Law | Bendix the Deputy Sheriff | 1932-06-08 |
| Movie | Texas Cyclone | Sheriff Lew Collins | 1932-02-24 |
| Movie | The Impatient Maiden | Cigar Stand Proprietor (uncredited) | 1932-03-01 |
| Movie | The All-American | News Commentator at Game (uncredited) | 1932-10-01 |
| Movie | Women Won't Tell | Man in Junkyard | 1932-11-16 |
| Movie | Afraid to Talk | Protester Sign Carrier (uncredited) | 1932-11-17 |
| Movie | Manhattan Tower | Mechanic (uncredited) | 1932-12-01 |
| Movie | Speed Madness | Joe | 1932-07-29 |
| Movie | Once in a Lifetime | Lighting Technician (uncredited) | 1932-10-02 |
| Movie | Cornered | Court Bailiff (uncredited) | 1932-08-05 |
| Movie | The Fourth Horseman | Toothless Town Drunk | 1932-09-25 |
| Movie | Honeymoon Lane | Driver | 1931-07-25 |
| Movie | Grief Street | Walt | 1931-10-01 |
| Movie | A House Divided | Musician (uncredited) | 1931-12-05 |
| Movie | Neck and Neck | Hector | 1931-11-04 |
| Movie | Dames Ahoy | Side Show Barker | 1930-02-09 |
| Movie | King of Jazz | Desk Sergeant ('Springtime') / Soldier ('All Noisy on the Eastern Front') / Waiter ('Oh! Forevermore!') / Front End of Horse / Quartet Member ('Nellie') | 1930-04-20 |
| Movie | Little Accident | Milkman (uncredited) | 1930-08-03 |
| Movie | His Lucky Day | Road House Thug (uncredited) | 1929-06-02 |
| Movie | Flight | Marine Pilot | 1929-09-14 |
| Movie | The Long, Long Trail | Skinny Rawlins | 1929-10-26 |
| Movie | The Last Performance | Clown (uncredited) | 1929-10-13 |
| Movie | One Hysterical Night | Paul Revere | 1929-10-05 |
| Movie | The Ballyhoo Buster | 1928-01-08 | |
| Movie | The Michigan Kid | Minor Role (uncredited) | 1928-10-20 |
| Movie | Flashing Oars | Hula Hula Hut Customer | 1927-02-28 |
| Movie | Sensation Seekers | Below Deck Yacht Crewman | 1927-03-21 |
| Movie | Tearin' Into Trouble | Billy Martin | 1927-03-19 |
| Movie | Blake of Scotland Yard | Henchman (uncredited) | 1927-08-14 |
| Movie | Alias The Deacon | Cashier at Cunningham's Rink | 1927-06-20 |
| Movie | The Ridin' Rowdy | 1927-04-24 | |
| Movie | Spangles | Lunch Counterman (uncredited) | 1926-11-07 |
| Movie | Webs of Steel | 1925-10-01 | |
| Movie | Lorraine of the Lions | Minor Role (uncredited) | 1925-10-11 |
| Movie | The Calgary Stampede | Racing Spectator in Grandstand at Rodeo (uncredited) | 1925-11-01 |