Ivan Matetić Ronjgov (10 April 1880 – 27 June 1960) was an Istrian composer.
Ivan Matetić was born in Rojnići, a village in present-day Croatia, from which he took his nickname "Ronjgov".
On the basis of this discovery, Matetić was able to document the folk songs of the Istrian region, to harmonize their notes, and finally to compose music in the same spirit.
He left a large number of musical notations from Istria and the Croatian seaside.
Works such as "Ćaće moj" ("My Papa"), "Roženice", "Mantinjada domaćemu kraju" ("Ode to our Homeland"), "Na mamin gorbak" ("Beside Mama's grave") are choral symphonies composed by Matetić.