Leonardo Vinci (1690 – 27 May 1730) was an Italian Baroque composer known chiefly for his 40 or so operas; comparatively little of his work in other genres survives. A central proponent of the Neapolitan School of opera, his influence on subsequent opera composers such as Johann Adolph Hasse and Giovanni Battista Pergolesi was considerable.

Life and career
He was born at Strongoli and educated at Naples under Gaetano Greco in the Conservatorio dei Poveri di Gesù Cristo. He first became known for his opere buffe (comic operas) in the Neapolitan language in 1719; he also composed many opere serie (dramatic operas). He was received into the Congregation of the Rosary, a lay religious and burial fraternity, at Formiello in 1728. He died in May 1730. Vinci is rumoured to have been poisoned by a jealous husband in the wake of an ill-advised affair, a story which is given by several reliable authorities without evident contradictions.

Music
Vinci's opere buffe, of which Li zite 'ngalera (1722) is generally regarded as the best, are full of life and spirit; his opere serie, of which Didone Abbandonata (Rome, 1726) and Artaserse (Rome, 1730) are the most notable, have an incisive vigour and directness of dramatic expression praised by music historian Charles Burney. According to Burney,

"Vinci seems to have been the first opera composer who, without degrading his art, rendered it the friend, though not the slave to poetry, by simplifying and polishing melody and calling the audience's attention to the voice part by liberating it from fugue, complication, and labored contrivance ".

— Charles Burney, A General History of Music (1789)

The well-known aria "Vo solcando," from Artaserse, is a good example of his style.