1958 – Juvenile Jungle Minor Role (Uncredited)
1958 – Thundering Jets (Lt. Robert ‘Tiger Bob’ Kiley)
1959 – Paratroop Command (Art) (Uncredited)
1962 – Red Nightmare (Pete Short)
1963 – Palm Springs Weekend (Eric Dean)
1964 – La nueva Cenicienta (Bob Conrad)
1965 – Young Dillinger (‘Pretty Boy’ Floyd)
1967 – Ven a cantar conmigo (Roberto)
1967 – The Bandits (Chris Barrett)
1969 – Keene (Bob Conrad)
1975 – Murph the Surf (Allan Kuhn)
1977 – Sudden Death (Duke Smith)
1979 – The Lady in Red (John Dillinger)
1982 – Wrong Is Right (Gen. Wombat)
1985 – Moving Violations (Chief Rowe) (Uncredited)
1994 – Samurai Cowboy (Gabe McBride)
1996 – Jingle All the Way (Officer Hummell)
1999 – New Jersey (Turnpikes)
Unrealsed – Garbage Day Garbage (Thrower Short)
2002 – Dead Above Ground (Reed Wilson)
Television (selected)
1959–1962 77 Sunset Strip (Tom Lopaka)
1959–1963 Hawaiian Eye (Tom Lopaka)
1965–1969 The Wild Wild West (Jim West)
1968–1972 Mission: Impossible (Bobby / Press Allen / Eddie Lorca)
1969 Mannix (Mitch Cantrell)
1969 The D.A.: Murder One Paul Ryan Television film
1970 Weekend of Terror (Eddie)
1971 The D.A.: Conspiracy to Kill (Deputy D.A. Paul Ryan)
1971 Five Desperate Women Michael Wylie Television film
1971 Adam-12 (Deputy D.A. Paul Ryan Episode)
1971–1972 The D.A. (Deputy D.A. Paul Ryan)
1972 Adventures of Nick Carter (Nick Carter)
1972–1973 Assignment Vienna (Jake Webster) 8
1974 Columbo (Milo Janus)
1975 The Last Day (Bob Dalton)
1976 Smash-Up on Interstate 5 (Sergeant Sam Marcum)
1976–1978 Baa Baa Black Sheep (Maj. Greg ‘Pappy’ Boyington)
1978 Confessions of the D.A. Man (Paul Ryan)
1978–1979 Centennial (Pasquinel)
1979 The Duke Oscar (‘Duke’ Ramsey)
1979 The Wild Wild West Revisited (Jim West)
1979 Breaking Up Is Hard to Do (Frank Scapa)
1979 A Man Called Sloane (Thomas R. Sloane)
1980 More Wild Wild West (Jim West)
1980 Coach of the Year (Jim Brandon)
1982 Will: G. Gordon Liddy (G. Gordon Liddy)
1983 Confessions of a Married Man
1984 Hard Knox (Col. Joe Knox)
1985 Two Fathers’ Justice (Bill Stackhouse)
1986 The Fifth Missile (Cmdr. Mark Van Meer)
1986 Assassin (Henry Stanton)
1986 Charley Hannah (Capt. Charley Hannah)
1986 One Police Plaza (Lt. Daniel B. Malone)
1987–1988 High Mountain Rangers (Jesse Hawkes)
1988 Police Story: Gladiator School Officer (Charles ‘Chick’ Stacy)
1988 Glory Days (Mike Moran)
1989 Jesse Hawkes (Jesse Hawkes)
1990 Anything to Survive (Eddie Barton)
1992 Mario and the Mob (Mario Dante)
1993 Sworn to Vengeance (Sergeant Stewart)
1994 Two Fathers: Justice for the Innocent (Stackhouse)
1994 Search and Rescue (Tooter)
1995 High Sierra Search and Rescue (Griffin ‘Tooter’ Campbell)
Another Robert Conrad Film 