The Citizenship is governed by the "Swedish Citizenship Act". As per the Act the citizenship in Sweden can be obtained in the following manner:

1. by birth
2. by adoption
3. by the marriage of the parents
4. after application (naturalisation)

1. the mother is a Swedish citizen
2. the father is a Swedish citizen and the child is born in Sweden,
3. the father is a Swedish citizen and is married to the child's mother
4. the father is deceased but at the time of his death was a Swedish citizen
5. and the child is born in Sweden, or married to the child's mother.

SWEDEN CITIZENSHIP BY ADOPTION LAW

If a Swedish citizen adopts a child under twelve years of age will become a Swedish citizen on adoption if

1. adopted in Sweden, Denmark, Finland, Iceland or Norway,
2. adopted by virtue of a foreign adoption decision which has been approved or is otherwise valid in Sweden

under the Act on International Legal Procedures relating to Adoption (1971:796) or which is valid under the Act concerning Sweden's Accession to the Hague Convention on Protection of Children and Cooperation in Respect of Intercountry Adoption (1997:191).

1. holds a permanent Swedish residence permit, and
2. has been domiciled in Sweden for five years or, if the child is stateless, three years.

1. holds a permanent Swedish residence permit, and
2. has been domiciled in Sweden since reaching the age of thirteen or, if the child is stateless, fifteen.

1. has provided proof of his or her identity,
2. has reached the age of eighteen,
3. holds a permanent Swedish residence permit,
4. has been domiciled in Sweden
   1. for the previous two years in the case of Danish, Finnish, Icelandic, Norwegian citizens,
   2. for the previous four years in the case of a stateless person or one who is considered to be a refugee
   3. for the previous five years for other aliens,and
5. has led and can be expected to lead a respectable life.