Rastislav is a name of Slavic origin, commonly associated with historical figures in Eastern Europe. It is derived from the Slavic elements "rasti," meaning "to grow," and "slava," meaning "glory." The name has been borne by various rulers and leaders, particularly in the regions of Slovakia and Czech Republic. One notable figure named Rastislav was a 9th-century prince of Great Moravia, a significant early Slavic state. He is remembered for his efforts to promote Christianity and for inviting the Byzantine brothers Cyril and Methodius to spread the faith and develop a written Slavic language.