Olga is a female name of Slavic origins.

It is the equivalent of Helga, and derived from the Old Norse adjective heilagr (prosperous, successful).

The name was brought to Eastern Europe in the 9th century, by the Scandinavian settlers who founded Kievan Rus'.

[1] It is used in Russia (Ольга), Ukraine (Ольга, transliterated Olha), Belarus (Вольга, transliterated Vol'ha), Bulgaria (Олга transliterated Olga), the Czech Republic, Greece and Cyprus (Όλγα, Ólgha), Georgia (ოლგა (Olga) or more archaic ოლღა (Olgha)), Latvia, Lithuania , Finland, Poland, Hungary, Romania, the Balkans (Serbian Олга or Оља), Western Europe and Latin America (Olga).

The male form is Oleg (Олeг).