Catullo is an Italian given name and surname. Notable people with the name include:
Surname Daniel Catullo, American concert promoter, director, and producer Gaio Valerio Catullo (c. 84 – c. 54 BC), known as Catullus, Latin poet of the late Roman Republic Lucia Catullo (1927–1985), Italian actress and dancer Tomaso Catullo (1782–1869), Venetian physician, geologist, paleontologist, zoologist and educator in the Università di Padova
Given name Catullo Ciacci (1934–1996), Italian racing cyclist Livio Catullo Stecchini (1913–1979), Italian professor of ancient history at Paterson State Teachers College in New Jersey