Leoncillo Leonardi, commonly known as Leoncillo, was an Italian sculptor who worked principally in glazed ceramics, often large-scale, and often using vivid colours. Until the mid-1950s his work was mostly figurative, but became more abstract thereafter. In 1946 he was among the founding members of the Nuova Secessione Artistica Italiana, which soon became the Fronte Nuovo delle Arti. He received the Premio Faenza in 1954 and again in 1964, and won the sculpture prize at the Biennale di Venezia of 1968. His work was also part of the sculpture event in the art competition at the 1948 Summer Olympics.