Leonardo Mocenigo (died 1623) was a Roman Catholic prelate who served as Bishop of Ceneda (1599–1623).^[1]

On 3 January 1599, Leonardo Mocenigo was appointed during the papacy of Pope Clement VIII as Bishop of Ceneda.^[1] In 1599, he was consecrated bishop by Pope Clement VIII.^[1] He served as Bishop of Ceneda until his death on 20 May 1623.^[1] While bishop, he was the principal co-consecrator of Giovanni Delfino (camerlengo), Bishop of Vicenza (1603).^[1]

• Cheney, David M. "Diocese of Vittorio Veneto (Ceneda)". Catholic-Hierarchy.org. Retrieved June 16, 2018. (for Chronology of Bishops) ^{[self-published]}
• Chow, Gabriel. "Diocese of Vittorio Veneto (Ceneda)(Italy)". GCatholic.org. Retrieved June 16, 2018. (for Chronology of Bishops) ^{[self-published]}