Leonardo Leo (5 August 1694 – 31 October 1744), more correctly Lionardo Oronzo Salvatore de Leo, was a Neapolitan Baroque composer.
A composer of the late Baroque era. He is mainly known for his operas during his lifetime, but his set of 6 cello concertos seem to be the most recorded genre today. They were written for Domenico Marzio Caraffa, the Duke of Maddaloni, who as also an amateur cellist. Although retaining qualities of the late Baroque, they really show signs of the early Classical style.