| Year | Title | Role | Notes |
| 1965 | Gunsmoke | Dave Lukens | Episode: "Song for Dying" |
| 1965–1969 | The Big Valley | Heath Barkley | 112 episodes |
| 1965 | The Alfred Hitchcock Hour | Howard White | Episode: "The Monkey's Paw–A Retelling" |
| 1970 | Bracken's World | Frank Carver | Episode: "Super-Star" |
| 1970–1971 | The Virginian | Roy Tate | 24 episodes |
| 1971 | Marcus Welby, M.D. | Jess Brandon | Episode: "Men Who Care" |
| 1971–1974 | Owen Marshall, Counselor at Law | Jess Brandon | 53 episodes |
| 1972 | Alias Smith and Jones | Joe Briggs | Episode: "The McCreedy Bust: Going, Going, Gone" |
| 1972 | The Sixth Sense | Clayton Ross | Episode: "With This Ring, I Thee Kill!" |
| 1973–1978 | The Six Million Dollar Man | Colonel Steve Austin | 99 episodesTV Land Award for Superest Super Hero (2003)Nominated – Golden Globe Award for Best Actor – Television Series Drama (1976) |
| 1974 | ABC Funshine Saturday Sneak Peek | Lee Majors / Steve Austin | Television film |
| 1976 | The Bionic Woman | Colonel Steve Austin | 6 episodes |
| 1981–1986 | The Fall Guy | Colt Seavers | Lead role113 episodes |
| 1983 | Trauma Center | Colt Seavers | Episode: "Notes About Courage" |
| 1983 | The Love Boat | Robert Richards | 2 episodes |
| 1984 | The Cowboy and the Ballerina | Bob Clayton (aka Clay) | Television film |
| 1986 | A Smoky Mountain Christmas | Mountain Dan | Television film |
| 1987 | The Return of the Six Million Dollar Man and the Bionic Woman | Colonel Steve Austin | Television film |
| 1988 | Dolly | Harold "Chance" Coleman | Episode: "#1.14" |
| 1988 | Danger Down Under | Reed Harris | Television film |
| 1989 | Bionic Showdown: The Six Million Dollar Man and the Bionic Woman | Steve Austin | Television film |
| 1989 | CBS Summer Playhouse | Jesse Pruitt | Episode: "Road Show" |
| 1990 | Tour of Duty | "Pop" Scarlet | 5 episodes |
| 1992–1993 | Raven | Herman "Ski" Jablonski | 20 episodes |
| 1993 | The Cover Girl Murders | Rex Kingman | Television film |
| 1994 | Bionic Ever After? | Steve Austin | Television Film |
| 1995 | Lonesome Dove: The Series | Woodrow F. Call | Episode: "Ties That Bind" |
| 1995 | Achilles | Peleus | Television film |
| 1995 | The Pinocchio Shop | Howard Hughes | Episode: "Air Tristan" |
| 1996 | Promised Land | Jim Walker | Episode: "The Secret" |
| 1996 | Daytona Beach | Owen Travers | Television film |
| 1997 | Lost Treasure of Dos Santos | Roy Stark | Television film |
| 1998 | Walker, Texas Ranger | Sheriff Bell | Episode: "On the Border" |
| 1999 | Soldier of Fortune, Inc. | Tom Winters | Episode: "Critical List" |
| 2000 | Family Guy | Himself | Voice, episode: "Running Mates" |
| 2000 | V.I.P. | Jed Irons | Episode: "Ride of the Valkyries" |
| 2000 | The War Next Door | Kennedy Smith Sr. | Episode: "Father Knows Death" |
| 2000 | Too Much Sun | Scott Reed | 6 episodes |
| 2001 | Hotel! | President of the U.S.A. | Television film |
| 2001 | Hard Knox | Darrell Knox | Television film |
| 2002 | Son of the Beach | Colonel Seymore Kooze | 3 episodes |
| 2003 | Jake 2.0 | Richard Fox | Episode: "Double Agent" |
| 2004 | The Trail to Hope Rose | Marshall Toll | Television film |
| 2005 | Will & Grace | Burt Wolfe | Episode: "It's a Dad, Dad, Dad, Dad World" |
| 2007 | The Minor Accomplishments of Jackie Woodman | Governor of California | Episode: "Good Times and Great Oldies" |
| 2007–2009 | The Game | Coach Ross | 6 episodes |
| 2007 | Wapos Bay | Steve from Ausin | Voice, episode: "Guardians" |
| 2007 | Me & Lee? | | Television film |
| 2008 | Wainy Days | David's Dad | Episode: "Rebecca" |