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| Title | Year | Status | Character |
|---|
| Mod Squad | 1970-1973 | TV Series | Dr. Webber / Major Bernard / Political Science Professor |
| The Streets of San Francisco | 1973 | TV Series | Major Frank Kramer, US Army Doctor |
| M*A*S*H | 1973 | TV Series | Finance Officer |
| The Doris Day Show | 1970-1973 | TV Series | Detective Charles / Fred Sutton / Horace Bowers |
| Banyon | 1972 | TV Series | Andrews |
| Family Flight | 1972 | TV Movie | Second Controller |
| The Bob Newhart Show | 1972 | TV Series | Dick |
| The New Centurions | 1972 | Sgt. Anders |
| The Magnificent Seven Ride! | 1972 | Andy Hayes |
| Man on a String | 1972 | TV Movie | Pipe Smoker |
| Mission: Impossible | 1970-1972 | TV Series | Wilson / Corrigan |
| The Astronaut | 1972 | TV Movie | Astronaut Higgins |
| Gidget Gets Married | 1972 | TV Movie | Jim Johnson |
| Longstreet | 1971 | TV Series | Lt. Madison |
| Chandler | 1971 | Bogardy (scenes deleted) |
| Ironside | 1971 | TV Series | Voice Print Officer |
| Cade's County | 1971 | TV Series | Harold Hopkins |
| Night Gallery | 1970-1971 | TV Series | State Trooper (segment "Death in the Family") / 1st Reporter (segment "The Nature of the Enemy") |
| Escape from the Planet of the Apes | 1971 | Control Room Officer (uncredited) |
| Inside O.U.T. | 1971 | TV Short | Patrolman (as James B. Sikking) |
| The Name of the Game | 1971 | TV Series | Police Lieutenant |
| The Immortal | 1971 | TV Series | Administrator |
| The Bold Ones: The New Doctors | 1971 | TV Series | 1st Reporter |
| The Night God Screamed | 1971 | Deacon Paul |
| Hogan's Heroes | 1968-1970 | TV Series | Hercules / Gestapo Officer / Private Berger |
| Love, American Style | 1970 | TV Series | Leonard (segment "Love and the Intruder") |
| The Young Lawyers | 1970 | TV Series | Joe Daley |
| Here Come the Brides | 1969-1970 | TV Series | Jenkins / Capt. Hale |
| The Survivors | 1969 | TV Series | Henson |
| Daddy's Gone A-Hunting | 1969 | Joe Menchell |
| Charro! | 1969 | Gunner |
| Adam-12 | 1968 | TV Series | Tex |
| Bonanza | 1967-1968 | TV Series | Kevin Maco / Jack Rimbau |
| Gomer Pyle: USMC | 1967 | TV Series | Colonel Richardson |
| The Invaders | 1967 | TV Series | Human Capt. William Taft |
| Point Blank | 1967 | Hired Gun |
| In Like Flint | 1967 | Secret Service Man (uncredited) |
| Run for Your Life | 1966-1967 | TV Series | Nugent / Doctor |
| Sail to Glory | 1967 | George Steers |
| 12 O'Clock High | 1966 | TV Series | Captain Rand |
| The Fugitive | 1964-1966 | TV Series | Deputy Marsh / Bert / Leonard Taft |
| My Mother the Car | 1965-1966 | TV Series | Sergeant Riddle / Doctor |
| My Favorite Martian | 1965 | TV Series | Aide |
| Honey West | 1965 | TV Series | Valentine |
| The Virginian | 1965 | TV Series | Sanders |
| The Long, Hot Summer | 1965 | TV Series | Doctor |
| O.K. Crackerby! | 1965 | TV Series | Mr. Joe Malone |
| The Loner | 1965 | TV Series | Confederate Captain |
| Von Ryan's Express | 1965 | American Soldier (uncredited) |
| The Outer Limits | 1963-1964 | TV Series | Botany / Orderly |
| The Carpetbaggers | 1964 | Reporter (uncredited) |
| The Strangler | 1964 | Police Sketch Artist |
| Rawhide | 1963 | TV Series | Luke Harger |
| Combat! | 1963 | TV Series | Lyles |
| General Hospital | 1963 | TV Series | Dr. James Hobart (1973-1976) (as James B. Sikking) |
| Perry Mason | 1961 | TV Series | Civilian Engineer Bert Springer |
| Assignment: Underwater | 1961 | TV Series | Dave Quinto |
| Five Guns West | 1955 | Union Sergeant (uncredited) |
| Just an American | 2012 | Dr. Hanover |
| The Closer | 2012 | TV Series | Judge Edward Crosby |
| Wild About Harry | 2009 | William Cauldicott |
| Made of Honor | 2008 | Reverend Foote (as James B. Sikking) |
| Fever Pitch | 2005 | Doug Meeks (as James B. Sikking) |
| Curb Your Enthusiasm | 2004 | TV Series | Jim Remington |
| The Guardian | 2001-2002 | TV Series | Bill McGee
Bill Magee |
| Submerged | 2001 | TV Movie | Rear Admiral Cyrus Cole (as James B. Sikking) |
| Rocket Power | 2000 | TV Series | Vice Principal Healy |
| Nowhere to Land | 2000 | TV Movie | George Eller (as James B. Sikking) |
| Batman Beyond | 1999-2000 | TV Series | Foreman / Harry |
| Mutiny | 1999 | TV Movie | Lt. Cmdr. Tynan (as James B. Sikking) |
| Invasion America | 1998 | TV Series | General Gordon |
| Brooklyn South | 1997-1998 | TV Series | Capt. Stan Jonas
Lt. Stan Jonas, IAB |
| Aaahh!!! Real Monsters | 1997 | TV Series | Dr. Carson |
| The Ring | 1996 | TV Movie | Sam Liebman (as James B. Sikking) |
| Duckman: Private Dick/Family Man | 1996 | TV Series |
| Dare to Love | 1995 | TV Movie | Ron Wells |
| Mimi wo sumaseba | 1995 | Seiya Tsukishima (English version, voice, as James B. Sikking) |
| Tyson | 1995 | TV Movie | Bill Clayton |
| In Pursuit of Honor | 1995 | TV Movie | Gen. Douglas MacArthur |
| Jake Lassiter: Justice on the Bayou | 1995 | TV Movie | Dr. Roger Salisbury (as James B. Sikking) |
| Seduced by Evil | 1994 | TV Movie | Nick Lindsay (as James B. Sikking) |
| Dead Badge | 1994 | Wheeler / Aaron Feld |
| The Pelican Brief | 1993 | FBI Director Denton Voyles (as James B. Sikking) |
| Doogie Howser, M.D. | 1989-1993 | TV Series | Dr. David Howser |
| Doing Time on Maple Drive | 1992 | TV Movie | Phil Carter (as James B. Sikking) |
| Final Approach | 1991 | Col. Jason Halsey |
| Cop Rock | 1990 | TV Series | Lt. Howard Hunter |
| Narrow Margin | 1990 | Nelson (as James B. Sikking) |
| Desperado: Badlands Justice | 1989 | TV Movie | Kirby Clarke |
| The Final Days | 1989 | TV Movie | Elliot Richardson |
| Around the World in 80 Days | 1989 | TV Mini-Series | Jenks |
| Hunter | 1989 | TV Series | Jack Small |
| Brotherhood of the Rose | 1989 | TV Mini-Series | Felix |
| Tales from the Hollywood Hills: Golden Land | 1988 | TV Movie as James B. Sikking |
| Too Good to Be True | 1988 | TV Movie | Russell Quinton (as James B. Sikking) |
| CBS Summer Playhouse | 1988 | TV Series | Lindsay |
| Ollie Hopnoodle's Haven of Bliss | 1988 | TV Movie | Old Man |
| Bay Coven | 1987 | TV Movie | Nicholas Kline |
| Hill Street Blues | 1981-1987 | TV Series | Lt. Howard Hunter
Sgt. Howard Hunter |
| Who's the Boss? | 1987 | TV Series | Cornelius |
| Police Story: The Freeway Killings | 1987 | TV Movie | Mayor Cameron |
| Soul Man | 1986 | Bill Watson (as James B. Sikking) |
| L.A. Law | 1986 | TV Series | Party Guest |
| Dress Gray | 1986 | TV Mini-Series | Maj. Clifford Bassett |
| First Steps | 1985 | TV Movie | Jim Davis (as James B. Skiking) |
| Morons from Outer Space | 1985 | Col. Raymond Laribee, CIA (as James B. Sikking) |
| The Jesse Owens Story | 1984 | TV Movie | Avery Brundage |
| Star Trek III: The Search for Spock | 1984 | Captain Styles (as James B. Sikking) |
| Up the Creek | 1984 | Tozer (as James B. Sikking) |
| The Star Chamber | 1983 | Dr. Harold Lewin (as James B. Sikking) |
| Outland | 1981 | Sgt. Montone (as James B. Sikking) |
| The Competition | 1980 | Brudenell (as James B. Sikking) |
| Ordinary People | 1980 | Ray (as James B. Sikking) |
| Trouble in High Timber Country | 1980 | TV Movie | Roger Lomax (as James B. Sikking) |
| The Electric Horseman | 1979 | Dietrich (as James B. Sikking) |
| Paris | 1979 | TV Series | Lew Castle |
| The Misadventures of Sheriff Lobo | 1979 | TV Series | Jack Wiley |
| Turnabout | 1979 | TV Series | Geoffrey St. James |
| Charlie's Angels | 1977-1979 | TV Series | Harrison Wellman / Miller |
| Hawaii Five-O | 1978 | TV Series | Oscar Ross / George Cameron |
| Lucan | 1978 | TV Series | Jerry Hultz |
| The Rockford Files | 1977-1978 | TV Series | Jeff Seales / John Hicklin |
| Operation Petticoat | 1978 | TV Series | Lt. O'Reilly |
| The Incredible Hulk | 1978 | TV Series | Cliff McConnell |
| The Bionic Woman | 1978 | TV Series | Ray Burns |
| Starsky and Hutch | 1978 | TV Series | Ted McDermott |
| A Woman Called Moses | 1978 | TV Series | McCracken |
| Capricorn One | 1977 | Control Room Man (as Jim Sikking) |
| The Last Hurrah | 1977 | TV Movie | Monsignor Killian |
| Kill Me If You Can | 1977 | TV Movie | Mr. Lea |
| Young Joe, the Forgotten Kennedy | 1977 | TV Movie | Commander Devril |
| Rafferty | 1977 | TV Series |
| Calling Doctor Storm, M. D. | 1977 | TV Movie | Bart Burton |
| Man from Atlantis | 1977 | TV Series | Captain Manzone |
| Never Con a Killer | 1977 | TV Movie | Bricklaw |
| The Feather and Father Gang | 1977 | TV Series | Bricklaw |
| Eight Is Enough | 1977 | TV Series | Mr. French |
| Delvecchio | 1977 | TV Series | Ned Wagner |
| Little House on the Prairie | 1977 | TV Series | Mr. Franklin |
| Police Story | 1977 | TV Series | Harris |
| Rich Man, Poor Man - Book II | 1976 | TV Series | Matthew Downey |
| Ellery Queen | 1976 | TV Series | Mike Hewitt |
| Cannon | 1972-1974 | TV Series | Clint / Lloyd |
| The F.B.I. Story: The FBI Versus Alvin Karpis, Public Enemy Number One | 1974 | TV Movie | New Orleans SAC |
| The Terminal Man | 1974 | Ralph Friedman |
| The F.B.I. | 1965-1974 | TV Series | Hair and fibers expert / SA Ed Spanger / SRA Herbert Withers / ... |
| Columbo | 1974 | TV Series | Policeman in office |
| Outrage | 1973 | TV Movie | Officer Geary |
| The Six Million Dollar Man: The Solid Gold Kidnapping | 1973 | TV Movie | 2nd OSO Agent |
| Room 222 | 1972-1973 | TV Series | Albert Kramer
Albert Cramer |
| The President's Plane Is Missing | 1973 | TV Movie | Aide to Dunbar |
| Mannix | 1970-1973 | TV Series | Sketchley / Mark Langdon |
| The Alpha Caper | 1973 | TV Movie | Henry Kellner |
| Coffee, Tea or Me? | 1973 | TV Movie | Businessman |
| The Rookies | 1972-1973 | TV Series | Captain Gentry / Defense Attorney |
| Brother on the Run | 1973 | Lt Summers |
| Scorpio | 1973 | Harris |
| Search | 1973 | TV Series | Callas |