Jerolim Kavanjin, also known as Girolamo Cavagnini (4 February 1641 – 29 November 1714), was a Venetian poet from Spalato (now Split, Croatia) who wrote in the Croatian language.

[2] In his summer mansion on Sutivan, on the island of Brač, where he retired after military and legislative careers, Kavanjin wrote the most voluminous poetical work in the whole of Croatian literature, with approximately 32,500 verses: Poviest vanđelska bogatoga a nesretna Epuluna i ubogoga a čestita Lazara, usually referred to by the later editors, according to the subtitle in the original, as Bogatstvo i uboštvo ("Riches and Poverty").

This religious-philosophical epic is poetically inconsistent but stylistically marked (it is written, beside Split Čakavian, in Ijekavian–Ikavian Štokavian).

Expressing the spirit of philosophical movements of the 17th and 18th centuries, this "encyclopædia in verses" (Josip Aranza) directs its Baroque spirituality towards the cogitation on life and human essentiality in the dual nature of the human and the divine.

Beside the classical humanistic, Latinate, and Italian literatures (such as Dante), the Bible and other religious writings, and beside the historical authors (such as Constantine Porphyrogenitus, priest of Duklja, Mavro Orbini), writings of the Old Dubrovnik have constituted the basic Kavanjin's reading list, above others Junije Palmotić and Ivan Gundulić.