John Franklin 'Johnny' Duncan (September 7, 1931 – July 15, 2000) was an American skiffle star. He was born in the Windrock coal mining camp overlooking the town of Oliver Springs, Tennessee, and became a British skiffle star in 1957 with the hit record "Last Train to San Fernando".
Johnny Duncan entered the United States Army and was sent to the United Kingdom where he met and married his wife Betty in 1952. After a short return to the United States he went back to the UK with Betty who needed a hospital operation.
On a visit to London Duncan went to hear Chris Barber's Dixieland Band which had turned Lonnie Donegan into a star with his international skiffle hit recording of "Rock Island Line". Barber signed Duncan to play with his band where he stayed for a year.
His first unsuccessful solo recording was a cover version of Hank Williams' "Kaw-Liga", but in 1957 his recording of a calypso called "Last Train To San Fernando" became the seventeenth most popular recording of that year in the UK, when amongst its rivals were Buddy Holly's "That'll Be The Day"; "True Love" by Bing Crosby and "Diana" by Paul Anka. The track was arranged by guitarist Denny Wright, who thought that San Fernando was in Texas and gave the piece a strong 'country' feel.