Dennis Patrick
- The Air Up There
1994 Father O'Hara
- Chances Are
1989 Archibald Blair
- Coach
1989 Benjamin
- Paradise
1988 Clay Jennings
- War and Remembrance
1988 Mahlon Tisdale
- The Bronx Zoo
1987
- It's Garry Shandling's Show
1986 Dr. Paul Derwin
- Heated Vengeance
1985 Charlie Pope
- The Twilight Zone
1985 (segment "The Girl I Married")
- Murder, She Wrote
1984 Dexter Baxendale
- Remington Steele
1982 Duncan Harlow
- Cagney & Lacey
1982
- St. Elsewhere
1982 Mr. Collins
- Choices
1981 Dr. Bowers
- Advice to the Lovelorn
1981 Dave Marsh
- The Fall Guy
1981 Selwyn / General Treeves
- The Sophisticated Gents
1981 Wilbur Marcus
- Simon & Simon
1981 Admiral Danforth
- The Georgia Peaches
1980 Wade Holt
- The Secret of Nikola Tesla
1980 Thomas Alva Edison
- $weepstake$
1979
- Dallas
1978 Vaughn Leland
- The Runaways
1978
- Fantasy Island
1978 Theodore Chandler
- Code Name: Diamond Head
1977 Commander Yarnell
- The Incredible Hulk
1977 Buck
- Eight Is Enough
1977 Harry Mitchell
- The Bionic Woman
1976
- Quincy, M.E.
1976 Tony Larson
- Mary Hartman, Mary Hartman
1976 Fred Foley
- The First 36 Hours of Dr. Durant
1975 Mr. Wesco
- Barbary Coast
1975
- Kate McShane
1975 Conrad
- Nightmare Honeymoon
1974 John Kenmore
- The Death Squad
1974 The Commissioner
- Night Games
1974 Judge Medford
- Panic on the 5:22
1974 Dudley Stevenson
- The Six Million Dollar Man
1974 Carlton Harris
- The Rockford Files
1974 Walter Hart
- Kojak
1973 Clay Dexter
- Barnaby Jones
1973 John R. Thurston
- Dear Dead Delilah
1972 Doctor Alonzo Charles
- The Streets of San Francisco
1972 Mr. Tyler
- Emergency!
1972 Mr. Hollister
- All in the Family
1971 Gordie Lloyd
- Cannon
1971
- McMillan & Wife
1971 Leon Silver
- Owen Marshall: Counselor at Law
1971 Judge
- Joe
1970 Bill Compton
- House of Dark Shadows
1970 Sheriff George Patterson
- Tiger by the Tail
1970 Frank Michaelis
- Daddy's Gone A-Hunting
1969 Dr. Parkington
- Hawaii Five-O
1969 Elliott Webster
- The Mod Squad
1968 Carson Alexander
- It Takes a Thief
1968 State's Attorney
- Custer
1967
- Mannix
1967 Darrell Bigelow
- Coronet Blue
1967 Jackson
- Ironside
1967 Arnold Gardner
- Dark Shadows
1966 Paul Stoddard
- T.H.E. Cat
1966 Cahill
- Lost in Space
1965 Keema
- The Big Valley
1965 Daniel Mannis
- Honey West
1965 Carson
- The Time Travelers
1964 Councilman Willard
- The Young Marrieds
1964 Phil Buckley #1
- The Fugitive
1963 Harry Montjoy
- The Dakotas
1963 Sgt. Everard Bonner
- The Virginian
1962 Cappy Donald
- The Alfred Hitchcock Hour
1962 Frenchy La Font
- Dr. Kildare
1961 Franklin V. Powers
- The Tall Man
1960 Curtis
- Checkmate
1960 Nick Culley
- Stagecoach West
1960 Hollis Collier
- Peter Loves Mary
1960 Sam Brubaker
- One Step Beyond
1959 Emmett North
- Riverboat
1959 Lansing
- Not for Hire
1959
- The Untouchables
1959 Gil Haller
- Bonanza
1959 Sam Bord
- Tightrope
1959 Barney MacCready
- The Deputy
1959 Finn Regan
- 77 Sunset Strip
1958 Fred Homer
- Peter Gunn
1958
- Wanted: Dead or Alive
1958 Eli
- Yancy Derringer
1958 Earle Bartley
- Mickey Spillane's Mike Hammer
1958 Ed Camden
- Perry Mason
1957 Martin Selkirk
- Sugarfoot
1957 Cal Sears
- Wagon Train
1957 Josh Anders
- State Trooper
1956 Pete Rogers
- Dick Powell's Zane Grey Theatre
1956 Danch
- Gunsmoke
1955 Trumbell
- Alfred Hitchcock Presents
1955 Mr. Rose
- The Millionaire
1955 Kirk McLaughlin
- The Phil Silvers Show
1955 Publicity for Mike Todd (uncredited)
- Matinee Theater
1955 Director
- Inner Sanctum
1954
- Omnibus
1952
- I Could Not Marry
1951 [as Dennis Harrison] Jeff Whitby
- Guilty Bystander
1950 Mace
- The Strip Tease Murder Case
1950 Johnny
- Cameo Theatre
1950
- Hands of Murder
1949
- Studio One
1948
- The Ford Theatre Hour
1948 Terry Rafferty
- Kraft Television Theatre
1947 Manchester
