| Fame | 1982 | Janitor | TV Show |
| Newhart | 1982 | Minister / Party Guest | TV Show |
| Silver Spoons | 1982 | Max | TV Show |
| The New Odd Couple | 1982 | Mr. Tibley | TV Show |
| Mysterious Two | 1982 | Tom | TV Movie |
| Bustin' Loose | 1981 | Judge Antonio Runzuli | Movie |
| Dead & Buried | 1981 | Ernie | Movie |
| The Greatest American Hero | 1981 | Harlan Blackford | TV Show |
| Rage! | 1980 | The Judge (as William Quinn) | TV Movie |
| Scruples | 1980 | Judge Riddle | TV Show |
| The Kids Who Knew Too Much | 1980 | Old Codger | TV Movie |
| Backstairs at the White House | 1979 | Andrew Mellon | TV Show |
| Roots: The Next Generations | 1979 | Taxi Driver | TV Show |
| Archie Bunker's Place | 1979 | Mr. Van Ranseleer / Mr. Van Ranseeler / Mr. Van Ranseller / ... | TV Show |
| Trapper John, M.D. | 1979 | Thomas / Ex Pug | TV Show |
| Stone | 1979 | Judge Worth | TV Show |
| Matilda | 1978 | Donohue | Movie |
| Terror Out of the Sky | 1978 | Old Dermott (uncredited) | TV Movie |
| Dallas | 1978 | Percival | TV Show |
| Greatest Heroes of the Bible | 1978 | | TV Show |
| Crisis in Sun Valley | 1978 | Deputy Willard | TV Movie |
| Tail Gunner Joe | 1977 | Congressman (uncredited) | TV Movie |
| Lou Grant | 1977 | Judge | TV Show |
| The Hardy Boys/Nancy Drew Mysteries | 1977 | Andy Hudson | TV Show |
| Delta County, U.S.A. | 1977 | Doc Place | TV Movie |
| The Last Hurrah | 1977 | Jimmy Minihan | TV Movie |
| Corey: For the People | 1977 | Justin Milford | TV Movie |
| You Gotta Start Somewhere | 1977 | | TV Movie |
| Gable and Lombard | 1976 | Gable's Sunday School Teacher (uncredited) | Movie |
| Captains and the Kings | 1976 | Dr. Harris Herbert | TV Show |
| Rich Man, Poor Man | 1976 | Monsignor | TV Show |
| The Lindbergh Kidnapping Case | 1976 | Andrew Phelps | TV Movie |
| Charlie's Angels | 1976 | Ted Waters | TV Show |
| Quincy M.E. | 1976 | Dr. Paul Wiesbarth | TV Show |
| Rich Man, Poor Man - Book II | 1976 | Sen. McInerney | TV Show |
| The Quest | 1976 | Doctor | TV Show |
| Hearts of the West | 1975 | Customer at Cafe Rio (uncredited) | Movie |
| Psychic Killer | 1975 | Hospital Coroner | Movie |
| Death Scream | 1975 | Man with Cigar (as William Quinn) | TV Movie |
| Barbary Coast | 1975 | Judge | TV Show |
| Ellery Queen | 1975 | Minister, J. P. Dell | TV Show |
| Kate McShane | 1975 | | TV Show |
| S.W.A.T. | 1975 | Dr. Davidson | TV Show |
| Switch | 1975 | Lt. Caridia | TV Show |
| When Things Were Rotten | 1975 | The Abbot | TV Show |
| Lincoln | 1974 | Illinois Rep. George Ashmun | TV Show |
| Little House on the Prairie | 1974 | Conductor / James Frazer / Carl Harper | TV Show |
| Run, Joe, Run | 1974 | Sheriff | TV Show |
| Shazam! | 1974 | Larry Frank | TV Show |
| The Rockford Files | 1974 | Armand Teasedale / Judge Raymond Ordonez / Judge Cline / ... | TV Show |
| The Six Million Dollar Man | 1974 | Tom | TV Show |
| Fools, Females and Fun | 1974 | Judge | TV Movie |
| Ace Eli and Rodger of the Skies | 1973 | Mortician | Movie |
| The Mad Bomber | 1973 | Sgt. Quinn (as William T. Quinn) | Movie |
| Satan's School for Girls | 1973 | Gardener | TV Movie |
| Savage | 1973 | Senator Havilland | TV Movie |
| Barnaby Jones | 1973 | Lyle Stranton / Judge | TV Show |
| Harry O | 1973 | Judge Bellinson | TV Show |
| Love Story | 1973 | Dr. Welman | TV Show |
| Police Story | 1973 | Andrews / Druggist | TV Show |
| The Magician | 1973 | Senator | TV Show |
| Toma | 1973 | Judge | TV Show |
| Set This Town on Fire | 1973 | Chairman | TV Movie |
| Emergency! | 1972 | Nick / Apartment Manager / Haley | TV Show |
| The Bob Newhart Show | 1972 | Dr. James Wyler / Eddie / Eddie, the Mailman / ... | TV Show |
| The Rookies | 1972 | Percy Higgins / Steve / Workman | TV Show |
| The Streets of San Francisco | 1972 | Gary King / Parsons / Medical Examiner | TV Show |
| The Waltons | 1972 | Senator Burgess | TV Show |
| How to Frame a Figg | 1971 | Asst. Atty. Gen. John Carmoni | Movie |
| Alias Smith and Jones | 1971 | Hotel Clerk / Dispatcher / Doctor | TV Show |
| All in the Family | 1971 | Mr. Van Ranseleer | TV Show |
| Cannon | 1971 | Mr. Tobias / Timmons / Ben Salter | TV Show |
| McMillan & Wife | 1971 | Police Chief Paulson / Judge Freeman | TV Show |
| Owen Marshall: Counselor at Law | 1971 | Judge / Judge Tomlinson | TV Show |
| Sarge | 1971 | Dr. Doyle | TV Show |
| Dead Men Tell No Tales | 1971 | Bartender | TV Movie |
| Incident in San Francisco | 1971 | | TV Movie |
| The Sheriff | 1971 | Doctor (as William Quinn) | TV Movie |
| The Challenge | 1970 | Marine Colonel | TV Movie |
| Dan August | 1970 | Judge | TV Show |
| The Mary Tyler Moore Show | 1970 | Walter Richards | TV Show |
| McCloud | 1970 | Customs Officer | TV Show |
| Men at Law | 1970 | Judge Gaunt / Judge Hayes | TV Show |
| The Interns | 1970 | Chairman | TV Show |
| The Odd Couple | 1970 | Dr. Melnitz | TV Show |
| The Partridge Family | 1970 | Preacher | TV Show |
| Nancy | 1970 | Stranger | TV Show |
| The Bold Ones: The Senator | 1970 | Sen. Stenberg | TV Show |
| Love Is a Funny Thing | 1969 | Le Passager | Movie |
| Pendulum | 1969 | Bailiff (uncredited) | Movie |
| Bracken's World | 1969 | Doctor | TV Show |
| Love, American Style | 1969 | Devring (segment "Love and the Motel Mixup") | TV Show |
| Night Gallery | 1969 | Doctor (segment "Green Fingers") / Dr. Tom (segment "The Phantom Farmhouse") | TV Show |
| Room 222 | 1969 | Mr. Healy | TV Show |
| The Bold Ones: The Lawyers | 1969 | Howard Marks / Dr. Staley / Judge | TV Show |
| The Bold Ones: The New Doctors | 1969 | Dr. Louis Zale | TV Show |
| The Young Lawyers | 1969 | Examiner | TV Show |
| Mr. Deeds Goes to Town | 1969 | Judge Brennan | TV Show |
| The Pigeon | 1969 | Doctor | TV Movie |
| The Shakiest Gun in the West | 1968 | U.S. Marshal Arthur Bates (uncredited) | Movie |
| Adam-12 | 1968 | George Foster | TV Show |
| Hawaii Five-O | 1968 | Shawn | TV Show |
| Land of the Giants | 1968 | Warden Sloan | TV Show |
| Mayberry R.F.D. | 1968 | T.J. Fowler / Judge | TV Show |
| Mod Squad | 1968 | Doctor / Desk Manager / Hearing Officer | TV Show |
| The Name of the Game | 1968 | Senator McMichaels / Deputy Coroner | TV Show |
| The Outcasts | 1968 | Doc Starnes | TV Show |
| The Outsider | 1968 | Lieutenant Kanter / Lt. Kanter | TV Show |
| Doctor, You've Got to Be Kidding! | 1967 | Executive at Meeting (uncredited) | Movie |
| The Ballad of Josie | 1967 | Bobbitt (uncredited) | Movie |
| The Reluctant Astronaut | 1967 | Captain Ferguson (uncredited) | Movie |
| Ironside | 1967 | Medical Examiner / Sergeant Reddick / Mr. Royce | TV Show |
| Judd for the Defense | 1967 | Dr. McClay / Judge | TV Show |
| Mannix | 1967 | Doctor / Coroner / Nick, the imprisoned drunk | TV Show |
| The Danny Thomas Hour | 1967 | Immigration Officer | TV Show |
| The Flying Nun | 1967 | Driver | TV Show |
| The Guns of Will Sonnett | 1967 | Picker | TV Show |
| The Invaders | 1967 | Police Lieutenant Eaton | TV Show |
| The Second Hundred Years | 1967 | Everett | TV Show |
| Penelope | 1966 | Bank Executive (uncredited) | Movie |
| Batman | 1966 | Board Member | TV Show |
| Felony Squad | 1966 | Burke | TV Show |
| Mr. Terrific | 1966 | Pilot | TV Show |
| Pistols 'n' Petticoats | 1966 | Mr. Stebbins | TV Show |
| Shane | 1966 | Shaw | TV Show |
| That Girl | 1966 | Harry / Priest | TV Show |
| Iron Horse | 1966 | Preacher / Legham | TV Show |
| The Rounders | 1966 | Paul Canfield | TV Show |
| Dark Intruder | 1965 | The Neighbor | Movie |
| Brainstorm | 1965 | Psychiatrist at Sanity Hearing (uncredited) | Movie |
| Mirage | 1965 | Eddie - Bartender (uncredited) | Movie |
| When the Boys Meet the Girls | 1965 | Dean of Colby (as William T. Quinn) | Movie |
| A Man Called Shenandoah | 1965 | Doctor | TV Show |
| Days of Our Lives | 1965 | Dr. Atwater | TV Show |
| Honey West | 1965 | Lieutenant Curtis / Lieutenant | TV Show |
| I Dream of Jeannie | 1965 | Gen. Lewis / Minister | TV Show |
| I Spy | 1965 | Carson | TV Show |
| Laredo | 1965 | Warburton | TV Show |
| Mister Roberts | 1965 | | TV Show |
| Please Don't Eat the Daisies | 1965 | Dean Carter | TV Show |
| Run for Your Life | 1965 | Dr. McClellan | TV Show |
| The Big Valley | 1965 | Walter / Doctor / Mr. Simmons / ... | TV Show |
| The F.B.I. | 1965 | Banker / Dorman / Joseph Lightner / ... | TV Show |
| The Loner | 1965 | Doctor | TV Show |
| The Long, Hot Summer | 1965 | Floyd Polk | TV Show |
| The Wild Wild West | 1965 | Dr. Emmett Sloan / Dr. Prior | TV Show |
| Bewitched | 1964 | Charles Gilbert | TV Show |
| Slattery's People | 1964 | Judge | TV Show |
| The Man from U.N.C.L.E. | 1964 | U.N.C.L.E. Lab Technician / Dr. Faust / Waiter | TV Show |
| The Munsters | 1964 | Attendant / Mr. White | TV Show |
| The Rogues | 1964 | Commander Duncan | TV Show |
| Broadside | 1964 | Captain Carleton / Commander Buckley / Col. Julian | TV Show |
| The Young Marrieds | 1964 | Bartender | TV Show |
| It Happened at the World's Fair | 1963 | Man Leaving Dispensary (uncredited) | Movie |
| The Birds | 1963 | Sam (as William Quinn) | Movie |
| Arrest and Trial | 1963 | Judge / Trial Judge / Judge Tesman / ... | TV Show |
| Bob Hope Presents the Chrysler Theatre | 1963 | 1st Judge | TV Show |
| Kraft Suspense Theatre | 1963 | Cornwall | TV Show |
| Mr. Novak | 1963 | Mr. Quinn | TV Show |
| My Favorite Martian | 1963 | Mac | TV Show |
| The Fugitive | 1963 | Chief Terry / Sgt. Lyman / Dr. Olney | TV Show |
| FBI Code 98 | 1963 | Special Agent Alan Woodward | TV Movie |
| Advise & Consent | 1962 | Sen. Paul Hendershot (as William Quinn) | Movie |
| Five Finger Exercise | 1962 | Salesman | Movie |
| Empire | 1962 | Lupak | TV Show |
| Going My Way | 1962 | The Editor | TV Show |
| McHale's Navy | 1962 | Admiral Ennis / Admiral Slocum / Admiral Shoemaker / ... | TV Show |
| Sam Benedict | 1962 | Reporter | TV Show |
| Stoney Burke | 1962 | Dr. Connors | TV Show |
| The Alfred Hitchcock Hour | 1962 | Mr. Penny | TV Show |
| The Beverly Hillbillies | 1962 | Tom Kelly | TV Show |
| The Eleventh Hour | 1962 | Representative | TV Show |
| The Gallant Men | 1962 | The Colonel | TV Show |
| The Lucy Show | 1962 | Mr. Frink | TV Show |
| The Virginian | 1962 | Judge / Doctor Stanton / Prosecutor / ... | TV Show |
| G.E. True | 1962 | Superior Court Judge | TV Show |
| Ada | 1961 | Tom De Paul - Committee Man (uncredited) | Movie |
| Cry for Happy | 1961 | Alan Lyman | Movie |
| Go Naked in the World | 1961 | Pete's Doctor (uncredited) | Movie |
| The Young Savages | 1961 | Police Capt. Larsen (uncredited) | Movie |
| Ben Casey | 1961 | | TV Show |
| Cain's Hundred | 1961 | Board Member | TV Show |
| Dr. Kildare | 1961 | Manager / Instructor / Mr. O'Connor | TV Show |
| Ripcord | 1961 | Ericson | TV Show |
| From the Terrace | 1960 | Lawrence Von Elm (uncredited) | Movie |
| The Mountain Road | 1960 | Col. Magnusson | Movie |
| Checkmate | 1960 | Waiter in bar | TV Show |
| Insight | 1960 | Mac McGinn / Major Ruiz / Mr. Bourne / ... | TV Show |
| My Three Sons | 1960 | Dr. Miller / Dr. Parker / Doctor | TV Show |
| The Westerner | 1960 | Ted Manning | TV Show |
| The Jim Backus Show | 1960 | Reggie Andrews | TV Show |
| The Last Angry Man | 1959 | Andrew Lord (uncredited) | Movie |
| One Step Beyond | 1959 | Captain H.L. Morgan / Doctor | TV Show |
| Bonanza | 1959 | Allison / Townsman / Walt / ... | TV Show |
| Hawaiian Eye | 1959 | Mr. Sperry / Eric McKay / Col. Conway / ... | TV Show |
| Philip Marlowe | 1959 | Senator Brockton | TV Show |
| The Detectives | 1959 | Brown / Harris | TV Show |
| The DuPont Show with June Allyson | 1959 | Mr. Peck | TV Show |
| Tightrope | 1959 | Captain Qualen | TV Show |
| The Flying Fontaines | 1959 | Al Bartlett (uncredited) | Movie |
| 77 Sunset Strip | 1958 | Petey Peterson / Eugene Seaver / Herb Bowerman | TV Show |
| Mister Ed | 1958 | Surgeon | TV Show |
| Peter Gunn | 1958 | Harry | TV Show |
| The Rifleman | 1958 | Frank Sweeney | TV Show |
| Wanted: Dead or Alive | 1958 | Bartender Mitch / Porter Fairchild / Sheriff George Mason / ... | TV Show |
| Behind Closed Doors | 1958 | Col. Barrett Cole | TV Show |
| Decoy | 1957 | Magraw | TV Show |
| M Squad | 1957 | Detective Ken Donovan | TV Show |
| Perry Mason | 1957 | H. B. Durell / First Judge / Christopher Walsh | TV Show |
| Trackdown | 1957 | Bartender | TV Show |
| Alcoa Theatre | 1957 | Gene MacNeill | TV Show |
| Rendezvous | 1957 | | TV Show |
| The Californians | 1957 | Carter | TV Show |
| State Trooper | 1956 | Milt Bowers | TV Show |
| Zane Grey Theater | 1956 | Hibbens / Minister / Les Manson | TV Show |
| Alfred Hitchcock Presents | 1955 | Mr. Dutton | TV Show |
| X Minus One | 1955 | | TV Show |
| The Magical World of Disney | 1954 | Old Codger | TV Show |
| Death Valley Days | 1952 | Ed Haynes | TV Show |
| This Is the Life | 1952 | Pastor Wagner | TV Show |
| Mr. District Attorney | 1951 | | TV Show |
| The Jack Benny Program | 1950 | Mr. Will, 2nd IRS Man | TV Show |
| Dimension X | 1950 | Clinton | TV Show |
| The Big Story | 1949 | Bill Griffith / Joseph Clarke | TV Show |
| The New School Teacher | 1924 | Pupil (as Billy Quinn) | Movie |
| No Mother to Guide Her | 1923 | Billy Mills, as a Child (as William Quinn) | Movie |
