Ivan Mane Jarnović (Italian: Giovanni Mane Giornovichi) (26 October 1747 – 23 November 1804) was a virtuoso violinist-composer of the 18th century whose family was of possibly Ragusan (today in Croatia) origin. He had a European career, performing in almost all major centres including Paris, Berlin, Warsaw, St Petersburg, Vienna, Stockholm, Basle, London, Dublin, amongst others. It appears he was a pupil of Antonio Lolli and he was an acquaintance of Joseph Haydn, with whom he shared concert programmes in London.
Jarnović was seemingly born either in Palermo or at sea en route from Dubrovnik to Palermo, Sicily, where he was baptised in the church San Antonio Abate on 29 October 1747. He died in St Petersburg, Russia on 23 November 1804.
A bicentennial seminar was convened and a concert performed in his honour in St Petersburg on 23–24 November 2004, which was hosted by the St Petersburg Union of Composers. Apart from local musicologists and performers, it was attended by Jarnović specialists Vjera Katalinić and Stanislav Tuksar from Zagreb, and by a descendant of one of Jarnović's daughters who travelled from Kimberley in South Africa.