Julian (or Jules) Fontana was a Polish pianist, composer, lawyer, author, translator, and entrepreneur, best remembered as a close friend and musical executor of Frédéric Chopin.
Fontana studied law at the University of Warsaw and music under Józef Elsner at the conservatory, where he met Chopin. Fontana left Warsaw in 1831, after the November Uprising and settled in Hamburg, before becoming a pianist and teacher in Paris in 1832.
In 1835 in London he participated in a concert with music played by 6 pianists, the others including Ignaz Moscheles, Johann Baptist Cramer and Charles-Valentin Alkan.
In 1840, Chopin dedicated his 2 Polonaises, Op. 40, to Fontana. These included the "Military Polonaise" in A major.