Horton's experience on stage included work with the American Theatre Wing in New York City, where he was the "resident leading man".
From that, he was signed to a contract with MGM Studios, where he "appeared in numerous films."
His "first major TV role" was on Ford Theatre in the episode "Portrait of Lydia" on December 16, 1954.

In his six decades of television, Horton, who became known for his voice, was most noted for his role as the frontier scout Flint McCullough in the television series Wagon Train from 1957 to 1962.
His co-stars were Ward Bond, John McIntire, Terry Wilson, and Frank McGrath.
He eventually quit the series to pursue a career in musical theater.

His role on Wagon Train was taken by Robert Fuller as the scout Cooper Smith.
Fuller, a veteran of the western series Laramie, resembled Horton, and the two actors coincidentally shared the same birthday, albeit nine years apart.

Horton played Drake McHugh, Ronald Reagan's role in the television version of Kings Row (1955), which featured Jack Kelly, and ran for seven episodes as part of the Warner Bros. Presents series, rotating with a television version of Casablanca and Cheyenne, starring Clint Walker.

The ruggedly handsome Horton made dozens of appearances in movies and television shows between 1951 and 1989, including a small role in the film Bright Road starring Dorothy Dandridge, an episode of Ray Milland's sitcom Meet Mr. McNutley and on the syndicated Sheriff of Cochise, starring John Bromfield.
Horton played Corporal Tom Vaughn in an episode "False Prophet" (1956) on Crossroads.

Horton appeared on seven episodes of Alfred Hitchcock Presents, including memorably as a tennis-playing bookie and blackmailer opposite Betsy von Furstenberg in "The Disappearing Trick", directed by Arthur Hiller.
He was cast as Danny Barnes in the episode "No Place to Hide" of theThe DuPont Show with June Allyson as well as appeared on the interview program Here's Hollywood and NBC's anthology series The Barbara Stanwyck Show.
He appeared several times on The Ford Show, Starring Tennessee Ernie Ford.

In the 1960s, Horton made two 45 RPM singles on the Columbia Records label: "The Very Thought of You"/"Hey There" and "King of the Road"/"Julie".
The former's A-side was also the title track of an album he released on the same label.

Horton performed for many years in theaters and nightclubs all over America, and in Australia as a singer (sometimes with his wife, the former Marilynn Bradley).
In 1963, producer David Merrick hired him as the male lead in the musical version of N. Richard Nash's play The Rainmaker (titled 110 in the Shade),.
The musical, with a score by Tom Jones and Harvey Schmidt, ran for 330 performances on Broadway.

Horton is also remembered for his offbeat role as an amnesiac in the 1965–1966 television series A Man Called Shenandoah.

In 1966, he starred in The Dangerous Days of Kiowa Jones, the first Western made specifically for television and simultaneous distribution to cinemas in Europe.
It was made by MGM and co-starred Sal Mineo and Diane Baker.

In 1968, two years later, Horton co-starred in The Green Slime, a low-budget Japanese-American science fiction film, directed by Kinji Fukasaku and shot entirely in Japan, but with an American and European cast.
His character Jack Rankin leads the crew of a space station in a battle for survival against one-eyed tentacled aliens that rapidly multiply as they feed on the station's sources of electricity.

From 1983 to 1984, Horton took a turn in daytime soap operas, playing the part of Whit McColl on As the World Turns.
Horton's experience on stage included work with the American Theatre Wing in New York City, where he was the "resident leading man". From that, he was signed to a contract with MGM Studios, where he "appeared in numerous films." His "first major TV role" was on Ford Theatre in the episode "Portrait of Lydia" on December 16, 1954.
In his six decades of television, Horton, who became known for his voice, was most noted for his role as the frontier scout Flint McCullough in the television series Wagon Train from 1957 to 1962. His co-stars were Ward Bond, John McIntire, Terry Wilson, and Frank McGrath. He eventually quit the series to pursue a career in musical theater.
His role on Wagon Train was taken by Robert Fuller as the scout Cooper Smith. Fuller, a veteran of the western series Laramie, resembled Horton, and the two actors coincidentally shared the same birthday, albeit nine years apart.
Horton played Drake McHugh, Ronald Reagan's role in the television version of Kings Row (1955), which featured Jack Kelly, and ran for seven episodes as part of the Warner Bros. Presents series, rotating with a television version of Casablanca and Cheyenne, starring Clint Walker.
The ruggedly handsome Horton made dozens of appearances in movies and television shows between 1951 and 1989, including a small role in the film Bright Road starring Dorothy Dandridge, an episode of Ray Milland's sitcom Meet Mr. McNutley and on the syndicated Sheriff of Cochise, starring John Bromfield. Horton played Corporal Tom Vaughn in an episode "False Prophet" (1956) on Crossroads.
Horton appeared on seven episodes of Alfred Hitchcock Presents, including memorably as a tennis-playing bookie and blackmailer opposite Betsy von Furstenberg in "The Disappearing Trick", directed by Arthur Hiller. He was cast as Danny Barnes in the episode "No Place to Hide" of theThe DuPont Show with June Allyson as well as appeared on the interview program Here's Hollywood and NBC's anthology series The Barbara Stanwyck Show. He appeared several times on The Ford Show, Starring Tennessee Ernie Ford.
In the 1960s, Horton made two 45 RPM singles on the Columbia Records label: "The Very Thought of You"/"Hey There" and "King of the Road"/"Julie". The former's A-side was also the title track of an album he released on the same label.
Horton performed for many years in theaters and nightclubs all over America, and in Australia as a singer (sometimes with his wife, the former Marilynn Bradley). In 1963, producer David Merrick hired him as the male lead in the musical version of N. Richard Nash's play The Rainmaker (titled 110 in the Shade),. The musical, with a score by Tom Jones and Harvey Schmidt, ran for 330 performances on Broadway.
Horton is also remembered for his offbeat role as an amnesiac in the 1965–1966 television series A Man Called Shenandoah.
In 1966, he starred in The Dangerous Days of Kiowa Jones, the first Western made specifically for television and simultaneous distribution to cinemas in Europe. It was made by MGM and co-starred Sal Mineo and Diane Baker.
In 1968, two years later, Horton co-starred in The Green Slime, a low-budget Japanese-American science fiction film, directed by Kinji Fukasaku and shot entirely in Japan, but with an American and European cast. His character Jack Rankin leads the crew of a space station in a battle for survival against one-eyed tentacled aliens that rapidly multiply as they feed on the station's sources of electricity.
From 1983 to 1984, Horton took a turn in daytime soap operas, playing the part of Whit McColl on As the World Turns.
Robert Horton (actor)