Giulio Regondi (1823 – 6 May 1872) was a Swiss-born classical guitarist, concertinist and composer active in France and (mainly) the United Kingdom.
Regondi was born of a German mother and an Italian father in Geneva, Switzerland. A child prodigy, Fernando Sor dedicated his Souvenir d'amitié op. 46 to Regondi in 1831, when the boy was just nine.
There is a reference to his appearing in London in 1831, presented as a child prodigy of the guitar. Most of Regondi's concertina music was written for the English system, however, at which he was a virtuoso, though his guitar music is probably better known. His works for solo guitar comprise a set of etudes, variations on a theme by Bellini and five larger works.
Regondi died in London.
- Nocturne 'Rêverie' op. 19, for guitar
- Fête villageoise 'Rondo caprice' op. 20, for guitar
- Air varié No. 1 op. 21, for guitar
- Air varié No. 2 op. 22, for guitar
- Introduction and caprice op. 23, for guitar
- Ten Études, for guitar
- Feuillet d'album for guitar
- Air varié de l'opera de Bellini I Capuleti e i Montecchi for guitar
- Fantasia on English Airs, for concertina and piano
- Leisure Moments (1-6), for concertina and piano (1857)
- Morceau de salon, for concertina and piano
- Recollections of Home, for concertina
- Ecce ridente il cielo, for concertina (1876?)