The European Countries That Do Not Offer Citizenship by Ancestry

For Americans tracing European roots, ancestry can be a real route to a second passport. But not every country hands out citizenship simply because a great-grandparent was born there. Most of Europe offers some version of descent-based nationality, yet a distinct group keeps the door narrow, usually to protect national identity or for historical reasons. Knowing which countries limit ancestry claims helps you focus your effort where it can actually pay off.

The microstates and the most exclusive systems

Several of Europe's smallest states are also its most restrictive. Andorra generally requires around 20 years of residence to apply unless you have Andorran parents, though a parliamentary bill introduced in May 2025 could open a limited ancestry route. Liechtenstein effectively requires a Liechtenstein parent, with naturalization needing decades of residence or even a local referendum. Monaco grants citizenship mainly through Monegasque parents, and San Marino likewise leans heavily on direct descent.

The Nordic approach: lineage, not distance

The Nordic countries follow strict jus sanguinis. Denmark, Iceland, Norway, and Sweden all pass citizenship through a parent rather than a distant ancestor, and being born on their soil does not by itself make you a citizen. Iceland in particular emphasizes integration, so an Icelandic grandparent alone is generally not enough without a deeper connection.

Strict but for different reasons

• Estonia limits descent to direct parentage, reflecting its focus on national identity since regaining independence in 1991.
• Belgium and the Netherlands blend jus sanguinis and jus soli, but both require registration and a maintained link for those born abroad.
• Montenegro and North Macedonia grant citizenship by descent through parents, not distant relatives.
• Several of these states also restrict or discourage dual citizenship.

What this means for your search

The pattern is consistent: these countries reward a close, documented tie rather than a far-back ancestral link. If your heritage traces to one of them, a claim may still be possible through a parent, but a great-grandparent usually will not be enough on its own. The good news for US applicants is that many other European countries, including Italy, Ireland, Poland, Germany, and Lithuania, are far more open to descent claims. This is general information, not legal advice. Run the free eligibility check to see your path.