Polish Citizenship by Descent

11 | 09 | 2026

Piotr Kopeć attorney-at-law 

Polish Citizenship by Descent – Do I Qualify Through My Grandparent?

If your parent, grandparent or great-grandparent was Polish, you may be wondering whether you can obtain Polish citizenship by descent.

In many cases, this may be possible. However, having a Polish ancestor does not automatically mean that you are a Polish citizen.

The key question is whether Polish citizenship was legally passed from one generation to the next without being lost along the way.

Can I qualify through my Polish grandparent?

Polish citizenship is based primarily on the principle of citizenship by descent (ius sanguinis).

In a typical case involving a grandparent, it is necessary to establish the following chain:

Polish grandparent → your parent → you

This usually requires proving that:

• your grandparent was a Polish citizen,
• your parent acquired Polish citizenship from that grandparent,
• your parent remained a Polish citizen when you were born,
• and you acquired Polish citizenship from your parent.

If this chain can be established, you may already be a Polish citizen. In that situation, the relevant procedure is generally confirmation of Polish citizenship, rather than applying for citizenship from the beginning.

Is having a Polish grandparent enough?

No.

The fact that your grandparent was born in Poland is an important starting point, but it does not by itself prove Polish citizenship.

Depending on the circumstances, it may be necessary to examine:

• the place and date of birth of your ancestor,
• when they left Poland,
• whether and when they acquired another citizenship,
• the date of birth of the next generation,
• military service or other legally relevant events,
• and the citizenship laws that applied at that time.

This is particularly important because Polish citizenship legislation changed several times during the 20th century.

What if my grandparent became a US, Canadian or Australian citizen?

Foreign naturalisation is often one of the most important issues in citizenship-by-descent cases.

However, the fact that your ancestor acquired another citizenship does not automatically answer whether Polish citizenship was lost.

The legal effect depends on the law in force at the relevant time.

For example, in older cases, the date of naturalisation, age of the person concerned, military obligations and family circumstances may all be relevant.

For this reason, a statement such as:

“My grandfather became a US citizen in 1950”

is important, but it is not enough on its own to determine whether Polish citizenship was lost.

Does it matter whether the Polish ancestor was my grandfather or grandmother?

In some historical cases, yes.

Today, Polish citizenship can be transmitted by either parent. Historically, however, the rules were different, particularly in relation to children born before changes in Polish citizenship legislation.

Therefore, the family line through which citizenship is claimed and the dates of birth of the relevant family members may be significant.

What documents may be required?

The exact document list depends on the individual case, but useful records often include:

• Polish and foreign birth certificates,
• marriage certificates,
• Polish passports or identity documents,
• naturalisation records,
• military records,
• archival residence records,
• documents concerning changes of name or surname,
• other family or civil status documents.

It is also common for names, surnames or dates to differ between Polish and foreign records. Such discrepancies do not necessarily prevent the case from succeeding, but they may need to be explained or corrected.

What if I do not have Polish documents?

This is very common.

Many descendants of Polish emigrants have only limited family documentation. Missing records may sometimes be located in Polish civil registry offices, state archives, church archives or other historical records.

Before collecting documents, it is usually worth determining which facts actually need to be proven. This can avoid unnecessary searches and costs.

Do I need to live in Poland or speak Polish?

Generally, no.

A person seeking confirmation of Polish citizenship by descent does not have to live in Poland, and there is no Polish-language examination as part of the confirmation procedure.

Many citizenship cases involving people living abroad can be handled largely remotely.

So, do I qualify?

Possibly.

Having a Polish grandparent may provide the basis for confirmation of Polish citizenship, but each case depends on the individual family history.

The most important questions are usually:

• Was your ancestor a Polish citizen?
• Was citizenship transmitted to the next generation?
• Did any event cause citizenship to be lost?
• Can the family relationship and relevant events be documented?

For this reason, Polish citizenship by descent cases usually require an individual legal assessment.

Need an assessment of your case?

If your parent, grandparent or great-grandparent was Polish, I can analyse your family history and available documents and assess whether confirmation of Polish citizenship may be possible.

My assistance may include identifying missing documents, analysing the relevant citizenship laws, preparing the application and representing you before the Polish authorities.

Learn more about Polish citizenship services.