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Vivyan's first screen role was in the 1949 episode "Two Sharp Knives" of the ''Studio One'' anthology series at a time when relatively few residences had television access. In 1957, he appeared as the character Richard Goff with Broderick Crawford in the episode "Nitro" of the syndicated series, ''Highway Patrol.''. He guest starred in two other 1950s syndicated programs too, ''Harbor Command'' and ''State Trooper.'' In 1957, he was cast as Hewitt in "The Laura Hunter Story" on CBS's fantasy drama ,''The Millionaire.'' He starred too as Mack Barron in the episode "The Little Witness" on Loretta Young's [[NBC]] anthology series<ref name=imdb>{{cite web|url=https://www.imdb.com/name/nm0900387/|title=John Vivyan|publisher=Internet Movie Database|accessdate=April 3, 2021}}</ref>  

Vivyan's first screen role was in the 1949 episode "Two Sharp Knives" of the ''Studio One'' anthology series at a time when relatively few residences had television access. In 1957, he appeared as the character Richard Goff with Broderick Crawford in the episode "Nitro" of the syndicated series, ''Highway Patrol.''. He guest starred in two other 1950s syndicated programs too, ''Harbor Command'' and ''State Trooper.'' In 1957, he was cast as Hewitt in "The Laura Hunter Story" on CBS's fantasy drama ,''The Millionaire.'' He starred too as Mack Barron in the episode "The Little Witness" on Loretta Young's [[NBC]] anthology series<ref name=imdb>{{cite web|url=https://www.imdb.com/name/nm0900387/|title=John Vivyan|publisher=Internet Movie Database|accessdate=April 3, 2021}}</ref>  

Thereafter, he appeared in three Warner Brothers series on [[ABC]], two westerns ''Colt .45'' (as George F. Foley in "The Mirage") and ''Sugarfoot'' (as Victor Valla in the episode "Deadlock"), and then on the detective series ''77 Sunset Strip'' (as Mitch in "The Girl Who Couldn't Remember"). Vivyan appeared as LeBow in "Duel at the Oaks" in the CBS western 'Yancy Derringe,'', starring Jock Mahone]. He appeared twice in ABC's ''The Life and Legend of Wyatt Earp,'' starring Hugh O'Brian, twice on CBS's ''Rawhide,'' and twice on NBC's ''Bat Masterson,'' starring Gene Barry. He appeared four times from 1957 to 1959 as different characters on the ABC/WB western series, ''Maverick.''  He also appeared in the syndicated western series, ''Tombstone Territory,''  in the episode entitled "Desert Survival."  He appeared as the gangster Duke in the 1958 episode, "The Gentle Monster" on ''The Adventures of Superman.''<ref name=imdb/>

Thereafter, he appeared in three Warner Brothers series on [[ABC]], two westerns ''Colt .45'' (as George F. Foley in "The Mirage") and ''Sugarfoot'' (as Victor Valla in the episode "Deadlock"), and then on the detective series ''77 Sunset Strip'' (as Mitch in "The Girl Who Couldn't Remember"). Vivyan appeared as LeBow in "Duel at the Oaks" in the CBS western ''Yancy Derringer,'', starring Jock Mahone]. He appeared twice in ABC's ''The Life and Legend of Wyatt Earp,'' starring Hugh O'Brian, twice on CBS's ''Rawhide,'' and twice on NBC's ''Bat Masterson,'' starring Gene Barry. He appeared four times from 1957 to 1959 as different characters on the ABC/WB western series, ''Maverick.''  He also appeared in the syndicated western series, ''Tombstone Territory,''  in the episode entitled "Desert Survival."  He appeared as the gangster Duke in the 1958 episode, "The Gentle Monster" on ''The Adventures of Superman.''<ref name=imdb/>

Vivyan appeared twice in the role of Jason Hemp, a dishonest [[Texas]] rancher, on ABC's ''Disneyland'' in the western miniseries, ''Texas John Slaughter,'' with Tom Tryon in the title role. He also guest starred on Richard Carlson's syndicated western series, ''Mackenzie's Raiders.''<ref name=imdb/>

Vivyan appeared twice in the role of Jason Hemp, a dishonest [[Texas]] rancher, on ABC's ''Disneyland'' in the western miniseries, ''Texas John Slaughter,'' with Tom Tryon in the title role. He also guest starred on Richard Carlson's syndicated western series, ''Mackenzie's Raiders.''<ref name=imdb/>