Restrictions Index. The Icelandic nationality is ranked 5th in The Quality of Nationality Index (QNI). This index differs from the Henley Passport Index, which focuses on external factors including travel freedom. The QNI considers in addition to travel freedom on internal factors such as peace & stability, economic strength, and human development as well. See also History of Icelandic nationality References External links Icelandic Nationality Act (Internet Archive) Nationality law Law of Iceland