Gustavo Leonardi

{{Short description|Italian entomologist}}

Gustavo Leonardi (27 February 1869, Civezzano, County of Tyrol – 25 August 1918, Vintimille) was an Italian entomologist.

Leonardi was an entomology assistant in the universities of Padua and Portici before becoming a plant disease inspector at Vintimille. He wrote 45 publications on pest insects, such as Monografia delle Cocciniglie italiane (1920). With Agostino Lunardoni (1857–1933), he wrote a four volume treatise on pest insects in Italy (1889–1901). With Antonio Berlese he issued the exsiccata series Chermotheca Italica (1895–1909).{{cite web |title=Chermotheca Italica: IndExs ExsiccataID=1965534975 |website=IndExs – Index of Exsiccatae |publisher=Botanische Staatssammlung München |url=https://www.botanischestaatssammlung.de/DatabaseClients/IndExs/Exsiccatae_IndExs_Details.jsp?ExsiccataID=1965534975 |access-date=13 July 2024}}