Surname Rosťa (Rosťa 
) , throughout the world, is a very rare cognomen. The family name Rosťa is characteristic of Eastern Europe, particularly Czechia, where it is a rare surname. Much more frequently, Rosťa is the forename as well as the last name.
Hus, Kočí, Kublák, Kropek, Prokop, Posker, Daněk, Dobeš, Novák, Němec, Valíček, Vokáč, Fišer, Svoboda, Bartoň, Kolář, Kučera, Križan, Zajíček, Novotný, Šafránek, Procházka, Kohút, Dembovský, Bubík, Svída, Mach, Antl, Bufu, Bjel, Rusz, Virt, Fous, Chmel, Beran, Burda, Bíba, Kruba, Klein, Dudek, Dufek, Vozka, Franc, Fiala, Švec, Motyka, Mička, Anděl, and Šťastný