| Man from Del Rio | 1956 | Fred Jasper (uncredited) | Movie |
| Circus Boy | 1956 | Pete, the Canvasman / Pete Mulligan, the Canvasman | TV Show |
| The Sheriff of Cochise | 1956 | Jones | TV Show |
| Hidden Guns | 1956 | Kingford | Movie |
| Freemont: The Trailblazer | 1956 | Cassidy | TV Movie |
| Cheyenne | 1955 | Prairie Dog | TV Show |
| Gunsmoke | 1955 | Groat | TV Show |
| My Friend Flicka | 1955 | Jeb Taylor | TV Show |
| The Adventures of Rin Tin Tin | 1954 | Sgt. Muldoon | TV Show |
| The Magical World of Disney | 1954 | Buffalo | TV Show |
| Southwest Passage | 1954 | Tall Tale | Movie |
| Massacre Canyon | 1954 | Private 'Peaceful' Allen (as Guinn Williams) | Movie |
| The Outlaw's Daughter | 1954 | Moose, Deputy | Movie |
| The Life of Riley | 1953 | Flanagan / Finnegan | TV Show |
| Hangman's Knot | 1952 | Smitty | Movie |
| Springfield Rifle | 1952 | Sgt. Snow | Movie |
| Man in the Saddle | 1951 | Bourke Prine (as Guinn'Big Boy'Williams) | Movie |
| Adventures of Wild Bill Hickok | 1951 | Tulsa Jack | TV Show |
| Al Jennings of Oklahoma | 1951 | Lon Tuttle | Movie |
| Rocky Mountain | 1950 | Pap Dennison (as Guinn Williams) | Movie |
| Hoedown | 1950 | Small Potatoes | Movie |
| Badmen of Tombstone | 1949 | Red Fisk | Movie |
| Brimstone | 1949 | Deputy Art Benson | Movie |
| Station West | 1948 | Mick | Movie |
| Smoky Mountain Melody | 1948 | Saddle Grease Williams | Movie |
| Over the Santa Fe Trail | 1947 | Big Boy Jackson | Movie |
| King of the Wild Horses | 1947 | Jed Acker (as Big Boy Williams) | Movie |
| Road to the Big House | 1947 | Butch McQuinn (as Guinn Williams) | Movie |
| Smoky River Serenade | 1947 | Wagon Wheel (as Big Boy Williams) | Movie |
| Cowboy Blues | 1946 | Big Boy | Movie |
| Throw a Saddle on a Star | 1946 | Big Boy | Movie |
| Singin' in the Corn | 1946 | Hank | Movie |
| Singing on the Trail | 1946 | Big Boy Webster | Movie |
| That Texas Jamboree | 1946 | Big Boy Frazer | Movie |
| The Man Who Walked Alone | 1945 | Champ | Movie |
| Rhythm Round-Up | 1945 | Zeke Winslow | Movie |
| Sing Me a Song of Texas | 1945 | Big Boy | Movie |
| Song of the Prairie | 1945 | Big Boy Jackson | Movie |
| Belle of the Yukon | 1944 | Sheriff Mervin Maitland (as Guinn Williams) | Movie |
| Cowboy and the Senorita | 1944 | Teddy Bear | Movie |
| Hands Across the Border | 1944 | Teddy Bear | Movie |
| Nevada | 1944 | Dusty | Movie |
| Cowboy Canteen | 1944 | Spud Harrigan (as Guinn [Big Boy] Williams) | Movie |
| Swing in the Saddle | 1944 | 'Tiny' Baldwin (as Guinn Williams) | Movie |
| Minesweeper | 1943 | CPO Ichabod Ferdinand 'Fixit' Smith | Movie |
| The Desperadoes | 1943 | Nitro Rankin (as Guinn {Big Boy} Williams) | Movie |
| American Empire | 1942 | Sailaway (as Guinn Williams) | Movie |
| Between Us Girls | 1942 | Father of the Boys | Movie |
| Lure of the Islands | 1942 | Jinx (as Big Boy Williams) | Movie |
| Mr. Wise Guy | 1942 | Luke Manning (as Guinn Williams) | Movie |
| Silver Queen | 1942 | Blackie | Movie |
| The Bugle Sounds | 1942 | Krims (as Guinn Williams) | Movie |
| Billy the Kid | 1941 | Ed Bronson (as Guinn Williams) | Movie |
| Mr. Bug Goes to Town | 1941 | Narrator (voice, uncredited) | Movie |
| Swamp Water | 1941 | Bud Dorson (as Guinn Williams) | Movie |
| You'll Never Get Rich | 1941 | Kewpie Blain (as Guinn Williams) | Movie |
| Riders of Death Valley | 1941 | Borax Bill | Movie |
| Country Fair | 1941 | Gunther Potts | Movie |
| Six Lessons from Madame La Zonga | 1941 | Alvin | Movie |
| Castle on the Hudson | 1940 | Mike Cagle | Movie |
| Santa Fe Trail | 1940 | Windy Brody | Movie |
| The Fighting 69th | 1940 | Paddy Dolan | Movie |
| Virginia City | 1940 | 'Marblehead' | Movie |
| Dulcy | 1940 | Henry | Movie |
| Money and the Woman | 1940 | Mr. Adler, the Bank Guard | Movie |
| Wagons Westward | 1940 | Jake Hardman (as 'Big Boy' Guinn Williams) | Movie |
| Alias the Deacon | 1940 | Bull Gumbatz (as Guinn Williams) | Movie |
| Pleased to Mitt You | 1940 | Chuck Brenner | Short Film |
| Blackmail | 1939 | Moose McCarthy (as Guinn Williams) | Movie |
| Dodge City | 1939 | Tex Baird | Movie |
| 6,000 Enemies | 1939 | Maxie (as Guinn Williams) | Movie |
| Bad Lands | 1939 | Billy Sweet (as Guinn Williams) | Movie |
| Fugitive at Large | 1939 | Conway (as Guinn Williams) | Movie |
| Legion of Lost Flyers | 1939 | Jake Halley | Movie |
| Mutiny on the Blackhawk | 1939 | Blake - the First Mate | Movie |
| Pardon Our Nerve | 1939 | Samson Smith (as Guinn Williams) | Movie |
| Street of Missing Men | 1939 | T-Bone | Movie |
| You and Me | 1938 | Taxi (as Guinn Williams) | Movie |
| Army Girl | 1938 | Sgt. Harry Ross (as Guinn Williams) | Movie |
| Hold That Co-ed | 1938 | Mike (as Guinn Williams) | Movie |
| Professor Beware | 1938 | Motorcycle Cop (uncredited) | Movie |
| Down in 'Arkansaw' | 1938 | Juble Butler (as Guinn Williams) | Movie |
| Everybody's Doing It | 1938 | 'Softy' Blane (as Guinn Williams) | Movie |
| I Demand Payment | 1938 | Happy Crofton | Movie |
| The Marines Are Here | 1938 | Sergeant Gibbons (as Guinn Williams) | Movie |
| A Star Is Born | 1937 | Posture Coach (as Guinn Williams) | Movie |
| Big City | 1937 | Danny Devlin (as Guinn Williams) | Movie |
| Wise Girl | 1937 | Mike (as Guinn Williams) | Movie |
| You Only Live Once | 1937 | Rogers (as Guinn Williams) | Movie |
| Don't Tell the Wife | 1937 | Lazarus Hubert Gregory 'Cupid' Dougal (as Guinn Williams) | Movie |
| Flying Fists | 1937 | Slug Cassidy (as Guinn Williams) | Movie |
| Girls Can Play | 1937 | Lieutenant Flannigan | Movie |
| My Dear Miss Aldrich | 1937 | An Attendant (as Guinn Williams) | Movie |
| The Bad Man of Brimstone | 1937 | 'Vulch' McCreedy (as Guinn Williams) | Movie |
| The Singing Marine | 1937 | Dopey | Movie |
| Dangerous Holiday | 1937 | Duke Edwards | Movie |
| She's No Lady | 1937 | Jeff (as Guinn Williams) | Movie |
| Crashing Through Danger | 1936 | Slim (as Guinn Williams) | Movie |
| End of the Trail | 1936 | Bob Hildreth | Movie |
| Kelly the Second | 1936 | Cecil Callahan (as Guinn Williams) | Movie |
| Love on a Bet | 1936 | Undetermined Secondary Role (scenes deleted) | Movie |
| Muss 'em Up | 1936 | 'Red' Cable (as Big Boy Williams) | Movie |
| The Big Game | 1936 | Pete Jenkins (as Guinn Williams) | Movie |
| The Vigilantes Are Coming | 1936 | Salvation | Movie |
| Career Woman | 1936 | Bede Sanders | Movie |
| Grand Jury | 1936 | Joseph Britt | Movie |
| North of Nome | 1936 | Haage | Movie |
| The Champ's a Chump | 1936 | Spike | Short Film |
| Private Worlds | 1935 | Jerry | Movie |
| The Glass Key | 1935 | Jeff (as Guinn Williams) | Movie |
| The Law of 45's | 1935 | Tuscon Smith (as Big Boy Williams) | Movie |
| The Littlest Rebel | 1935 | Sgt. Dudley (as Guinn Williams) | Movie |
| Big Boy Rides Again | 1935 | Tom Duncan (as Big Boy Williams) | Movie |
| Gun Play | 1935 | Bill Williams (as Big Boy Williams) | Movie |
| Here Comes Cookie | 1935 | Big Boy (as 'Big Boy' Williams) | Movie |
| Powdersmoke Range | 1935 | Lullaby Joslin (as Guinn Williams) | Movie |
| One in a Million | 1935 | Spike McGafferty | Movie |
| Danger Trails | 1935 | Bob Wilson (as Big Boy Williams) | Movie |
| Miss Pacific Fleet | 1935 | Nicholas 'Nick' - Annie's Boyfriend (as Guinn Williams) | Movie |
| Society Fever | 1935 | Edgar Prouty | Movie |
| Village Tale | 1935 | Ben Roberts (as Guinn Williams) | Movie |
| Flirtation Walk | 1934 | 'Sleepy' (as Guinn Williams) | Movie |
| Here Comes the Navy | 1934 | Dance-Floor Manager (as Guinn Williams) | Movie |
| Palooka | 1934 | Slats (uncredited) | Movie |
| The Silver Streak | 1934 | Higgins (as Guinn Williams) | Movie |
| Cowboy Holiday | 1934 | Buck Sawyer (as Big Boy Williams) | Movie |
| Half a Sinner | 1934 | 'Bull' Moran | Movie |
| Romance in the Rain | 1934 | Panya Mankiewicz | Movie |
| Cheaters | 1934 | Detective Sweeney (as Guinn Williams) | Movie |
| Thunder Over Texas | 1934 | Ted Wright (as 'Big Boy' Williams) | Movie |
| Undie-World, The | 1934 | Bugsy McHugh (as Big Boy Williams) | Short Film |
| College Coach | 1933 | Matthews (as Guinn Williams) | Movie |
| Man of the Forest | 1933 | Big Boy (as Guinn Williams) | Movie |
| Laughing at Life | 1933 | Jones (as Guinn Williams) | Movie |
| Rafter Romance | 1933 | Fritzie (as Guinn Williams) | Movie |
| The Mystery Squadron | 1933 | Bill 'Jellybean' Cook (as 'Big Boy' Williams) | Movie |
| The Phantom Broadcast | 1933 | Sandy Higgins (as Big Boy Williams) | Movie |
| Polly of the Circus | 1932 | Eric (as Guinn Williams) | Movie |
| Heritage of the Desert | 1932 | Lefty - Henchman (as Guinn Williams) | Movie |
| Ladies of the Jury | 1932 | Steve Bromm (uncredited) | Movie |
| You Said a Mouthful | 1932 | The Other Joe Holt (uncredited) | Movie |
| 70,000 Witnesses | 1932 | Connors (as Guinn Williams) | Movie |
| Boys Will Be Boys | 1932 | Butch | Short Film |
| The Devil Is Driving | 1932 | Mac (as Guinn Williams) | Movie |
| Drifting Souls | 1932 | Bing (as Gwynn Williams) | Movie |
| Running Hollywood | 1932 | Scratchface Henchman | Short Film |
| The Bachelor Father | 1931 | Richard 'Dick' Berney (as Guinn Williams) | Movie |
| The Phantom | 1931 | Dick Mallory (as Guinn Williams) | Movie |
| Catch as Catch Can | 1931 | Strangler Sullivan (as Guinn Williams) | Short Film |
| The Great Meadow | 1931 | Rubin Hall (as Guinn Williams) | Movie |
| War Mamas | 1931 | Doughboy | Short Film |
| City Girl | 1930 | Reaper (as Guinn Williams) | Movie |
| Liliom | 1930 | Hollinger (as Guinn Williams) | Movie |
| The Bad Man | 1930 | Red Giddings (as Guinn Williams) | Movie |
| College Lovers | 1930 | Tiny Courtley (as Guinn Williams) | Movie |
| The Big Fight | 1930 | Tiger (as Guinn Williams) | Movie |
| Lucky Star | 1929 | Sgt. Martin Wrenn | Movie |
| The Forward Pass | 1929 | Honey Smith (as Guinn Williams) | Movie |
| From Headquarters | 1929 | Gunnery Sgt. Wilmer (as Guinn Williams) | Movie |
| Beggars of Life | 1928 | Baker's Cart Driver (uncredited) | Movie |
| My Man | 1928 | Joe Halsey (as Guinn Williams) | Movie |
| Noah's Ark | 1928 | Al / Ham (as Gwynn Williams) | Movie |
| Ladies' Night in a Turkish Bath | 1928 | Sweeney (as Guinn Williams) | Movie |
| Burning Daylight | 1928 | English Harry (as Big Boy Williams) | Movie |
| Vamping Venus | 1928 | Mars (as Big Boy Williams) | Movie |
| Arizona Bound | 1927 | Cowboy | Movie |
| Babe Comes Home | 1927 | Baseball Player (as Big Boy Williams) | Movie |
| Slide, Kelly, Slide | 1927 | McLean (as Guinn Williams) | Movie |
| Backstage | 1927 | Mike Donovan (as Guinn Williams) | Movie |
| The College Widow | 1927 | Don White (as Big Boy Williams) | Movie |
| The Down Grade | 1927 | Ed Holden | Movie |
| Lightning | 1927 | Cuth Stewart (as Guinn Williams) | Movie |
| Quarantined Rivals | 1927 | Joe - The Plumber (as Big Boy Williams) | Movie |
| Snowbound | 1927 | Bull Morgan (as Guinn Williams) | Movie |
| The Woman Who Did Not Care | 1927 | Lars (as Guinn Williams) | Movie |
| Brown of Harvard | 1926 | Hal Walters (as Guinn Williams) | Movie |
| The Desert's Toll | 1926 | Henchman (as Guinn Williams) | Movie |
| Bad Man from Bodie | 1925 | | Short Film |
| Big Stunt | 1925 | | Movie |
| Black Cyclone | 1925 | Jim Lawson (as Guinn Williams) | Movie |
| Fangs of Wolfheart | 1925 | | Movie |
| Red Blood and Blue | 1925 | Tom Butler (as Big Boy Williams) | Movie |
| Riders of the Sand Storm | 1925 | The Cowboy | Movie |
| Whistling Jim | 1925 | WhistlingJim (as Big Boy Williams) | Movie |
| Wolfheart's Revenge | 1925 | Jack Stanley (as Big Boy Williams) | Movie |
| Rose of the Desert | 1925 | Cowboy (as Big Boy Williams) | Movie |
| Sporting West | 1925 | | Movie |
| Courage of Wolfheart | 1925 | Tex Marshall | Movie |
| The Avenger | 1924 | Nat Sherwood (as Big Boy Williams) | Movie |
| The Eagle's Claw | 1924 | Dan Carson (as Big Boy Williams) | Movie |
| $1,000 Reward | 1923 | | Movie |
| Cyclone Jones | 1923 | Cyclone Jones (as Big Boy Williams) | Movie |
| End of the Rope | 1923 | | Movie |
| Riders at Night | 1923 | | Movie |
| Uncensored Movies | 1923 | | Short Film |
| Across the Border | 1922 | Andy Fowler (as Big Boy Williams) | Movie |
| Blaze Away | 1922 | Big Boy | Movie |
| The Cowboy King | 1922 | Dud Smiley (as Big Boy Williams) | Movie |
| The Freshie | 1922 | Charles Taylor | Movie |
| Remembrance | 1922 | | Movie |
| Rounding Up the Law | 1922 | Larry Connell (as Big Boy Williams) | Movie |
| The Trail of Hate | 1922 | Silent Kerry | Movie |
| The Ropin' Fool | 1922 | The Foreman | Short Film |
| Jack Rider, The | 1921 | Frank Stevens (as Big Boy Williams) | Movie |
| Vengeance Trail, The | 1921 | Big Boy Bronson (as Big Boy Williams) | Movie |
| Western Firebrands | 1921 | Billy Fargo (as Big Boy Williams) | Movie |
| Cupid the Cowpuncher | 1920 | Hairoil Johnson (as Guinn Williams) | Movie |
| Godless Men | 1920 | Seaman (uncredited) | Movie |
| Almost a Husband | 1919 | | Movie |
| Jubilo | 1919 | Man Shooting Pool with Bert (uncredited) | Movie |
