Svyatoslav (Russian: Святосла́в) is a masculine given name of Slavic origin, common in Russian and Ukrainian. It is derived from the Slavic elements svętŭ "sacred, holy" and slava "glory", thus meaning "sacred glory". The name has a pre-Christian pagan character, originally meaning "one who worships the light" (probably in reference to the sun), but in Christian times it became associated with holiness and glory.EtymologySvyatoslav is a compound of the Old East Slavic elements *svętŭ (sacred, holy) and *slava (glory). Its cognates include Ukrainian Sviatoslav, Bulgarian Svetoslav, Czech Svatoslav, Polish Świętosław, and Serbian Svetislav. The Old Slavic form was Svętoslavŭ.Historical significanceThe most famous bearer was Sviatoslav I of Kiev (c. 943–972), prince of Kievan Rus and the son of Igor and Olga. He was the first ruler of Rus to have a Slavic rather than an Old Norse name. Sviatoslav was renowned for his military campaigns, largely against the Khazar Khaganate, the Bulgarian Empire, and the Byzantine Empire. His reign marked a significant expansion of Kievan power. Later monarchs included Sviatoslav II of Kiev (1027–1076).Notable bearersIn addition to royalty, the name has been borne by prominent individuals in modern times. Svyatoslav Richter (1915–1997) was a celebrated Soviet pianist known for his virtuosity. Svyatoslav Vakarchuk (born 1975) is the lead singer of the Ukrainian rock band Okean Elzy. In sports, Svyatoslav Mykhailiuk (born 1997) is a Ukrainian professional basketball player who has played in the NBA. Related forms and diminutivesCommon diminutives include Slava (Ukrainian). In Bulgarian, a diminutive is Svetlyo; in Polish, Świętek; and in Slavic contexts, Slavko, Sveto, Svet, Sviat, or Sviatko are also used. The feminine form is Sviatoslava.Key factsMeaning: "sacred glory" (from *svętŭ and *slava)Origin: SlavicType: First nameUsage: Russian, Ukrainian