swedish nationality law determines entitlement to Swedish citizenship. Citizenship of Sweden is based primarily on the principle of jus sanguinis. In other words, citizenship is conferred primarily by birth to a Swedish parent, irrespective of place of birth.
In general, children born in Sweden to foreign parents do not acquire Swedish citizenship at birth, although if they remain resident in Sweden they may become Swedish later on.
Swedish law was significantly amended with effect from 1 July 2001 and from that date, dual citizenship is permitted without restriction.