Year 1839 (MDCCCXXXIX) was a common year starting on Tuesday (link will display the full calendar) of the Gregorian Calendar and a common year starting on Sunday of the 12-day slower Julian calendar.

Josep Ferran Sorts i Muntades (baptized 14 February 1778 – died 10 July 1839) was a Spanish classical guitarist and composer. While he is best known for his guitar compositions, he also composed music for a wide range of genres, including opera, orchestra, string quartet, piano, voice, and ballet. His ballet score Cendrillon (Cinderella) received over one hundred performances. Sor’s works for guitar range from pieces for beginning players to advanced players such as Variations on a Theme of Mozart.

Sor gave concerts throughout Europe, including in England, Paris, Berlin, and Warsaw. Before the early 19th century, the guitar was little-known in England. Sor seems to have created a market for himself there and then met the demand. Sor’s contemporaries considered him to be the best guitarist in the world, and his works for guitar have been widely played and reprinted since his death.

As Sor's works were published in various countries, his name was translated, leading to variations in the spelling. Variations have included Joseph Fernando Macari Sors, Fernando Sor, Ferran Sor, Ferdinand Sor, and Ferdinando Sor.