Residence permits for volunteers are for persons older than 18, who intend to work for non-governmental organizations on charity or humanitarian issues.

A residence permit for missionaries is for individuals who come to Iceland for a religious purpose.

A person aged 18-25 may apply for a residence permit if they intend to come to Iceland and work as an au pair for a host family.

A foreign national or stateless person, 18-20 years old, can obtain Icelandic citizenship by notifying the Directorate of Immigration of their wish.