James Gregory Filmography
- Actor (100 credits)
- Mr. Belvedere (1985) Mr. Sparks
- Wait Till Your Mother Gets Home! (1983) Dan Peters
- The Flight of Dragons (1982) Bryagh
- Goldie and the Boxer Go to Hollywood (1981) Leo Hackett
- Gridlock (1980) General Caruthers
- The Main Event (1979) Gough
- Supertrain (1979) Griswald
- Flying High (1978) Harry
- The Bastard (1978) Will Campbell
- All's Fair (1976) Arthur Drake
- Francis Gary Powers: The True Story of the U-2 Spy Incident (1976) James Donovan
- The Strongest Man in the World (1975) Chief Blair
- The Abduction of Saint Anne (1975) Pete Haggerty
- McCoy (1975) Admiral Stemlock
- Barney Miller (1974) Inspector Frank Luger
- Kolchak: The Night Stalker (1974) Captain Quill
- Police Story (1973) Captain McKay
- Miracle on 34th Street (1973) District Attorney
- The Weekend Nun (1972) Sid Richardson
- Search (1972) Ambassador Gordon Essex
- Sanford and Son (1972) Commander
- Jigsaw (1972)
- Columbo: Short Fuse (1972) David L. Buckner
- Columbo: The Most Crucial Game (1972) Coach Rizzo
- The Paul Lynde Show (1972) T.R. Scott
- A Very Missing Person (1972) Oscar Piper
- Cade's County (1971) Taylor Hargutt
- Shoot Out (1971)
- The Late Liz (1971) Sam Burns
- The Million Dollar Duck (1971) Rutledge
- All in the Family (1971) William R. Kirkwood
- Beneath the Planet of the Apes (1970) Ursus
- The Hawaiians (1970) Dr. Whipple Sr., not listed in credits
- The Partridge Family (1970) Claude Tubbles
- The Flim-Flam Man (1969) Packard
- My World and Welcome to It (1969) J. P. Morgan
- The Love God? (1969)
- Bracken's World (1969) Leeson Fowler
- The Secret War of Harry Frigg (1968)
- Columbo (1968) Coach Rizzo
- The Outsider (1968) Michael Cameron
- Lancer (1968) Marshal Joe Barker
- The Name of the Game (1968) Senator Tucker
- Clambake (1967) Duster Heyward
- The High Chaparral (1967) Jake Stoner
- The Ambushers (1967) MacDonald
- Ironside (1967)
- Cimarron Strip (1967) Buckman
- Cowboy in Africa (1967) Blue Eyes
- The Silencers (1966) MacDonald
- Tarzan (1966) Dr. David Rhys
- Murderers' Row (1966)
- Star Trek (1966) Dr. Tristan Adams
- That Girl (1966) Jonathan Adams
- The Big Valley (1965) Simon Carter
- Hogan's Heroes (1965) General Biedenbender
- The Loner (1965)
- The Sons of Katie Elder (1965) Morgan Hastings
- A Rage to Live (1965) Dr. O'Brien
- F Troop (1965)
- A Distant Trumpet (1964) Maj. Gen. Alexander Upton Quaint
- Quick Before It Melts (1964) Vice Admiral
- The Rogues (1964) Augustus Lineen
- PT 109 (1963)
- Twilight of Honor (1963) Norris Bixby
- Captain Newman, M.D. (1963)
- Breaking Point (1963) Malcolm
- The Lieutenant (1963) Sgt. Horace «Biff» Capp
- Sam Benedict (1962) John Paul Elcott
- Two Weeks in Another Town (1962)
- The Eleventh Hour (1962) Eddie Forman
- The Manchurian Candidate (1962) Senator John Yerkes Iselin
- X-15 (1961) Tom Deparma
- Alcoa Premiere (1961) Driscoll
- The New Breed (1961) Father Al
- Al Capone (1959) Sgt. Schaefler
- Hey Boy! Hey Girl! (1959) Father Burton
- The DuPont Show with June Allyson (1959) John Kramer
- The Twilight Zone (1959) Air Force General
- Underwater Warrior (1958) Lt. William Arnold, MD
- Westinghouse Desilu Playhouse (1958) Martin Burke
- Onionhead (1958) Lt. Cmdr. Fox aka The Skipper
- The Big Caper (1957) Flood
- Alcoa Theatre (1957) Charlie Hanes
- The Young Stranger (1957) Police Sgt. Shipley
- Suspicion (1957) Morton Noble
- Nightfall (1957) Ben Fraser
- Gun Glory (1957) Grimsell
- The Scarlet Hour (1956) Ralph Nevins
- Playhouse 90 (1956) Chief Fuller
- The Alcoa Hour (1955) Martin Hobbes
- The Frogmen (1951) Chief Petty Officer Lane, not listed in credits
- Goodyear Television Playhouse (1951)
- The Web (1950)
- Danger (1950) Willie
- The Big Story (1949) Joe Dineen
- Studio One (1948) Corey
- The Naked City (1948) Patrolman Albert Hicks, not listed in credits
- The Philco Television Playhouse (1948) Angus
- Kraft Television Theatre (1947)
