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Papers · Luxembourg
Updated September 2026

🏳️ How do I apply for citizenship, and who helps with the application?

Direct answer

Naturalisation has conditions (years of lawful residence, language level, integration test, income, no serious record), a procedure (application at Direction de l'immigration (Ministère des Affaires étrangères) (247-84040), fee, interview, a decision within a legal deadline that is often exceeded), and consequences you should check first — whether you may keep your current nationality. Commune — bureau de la population / MyGuichet.lu (guichet.public.lu) confirms your registration history, which is the proof of residence years. Assistance judiciaire (Barreau) / consultations juridiques gratuites (barreau.lu) advises for free if the case is complicated (gaps, a refusal, a criminal record).

Call firstDirection de l'immigration (Ministère des Affaires étrangères)
Report toCommune — bureau de la population / MyGuichet.lu
If that failsAssistance judiciaire (Barreau) / consultations juridiques gratuites

🗣️ What to say

"I have lived lawfully in Luxembourg since [date] and hold [permit]. I would like to apply for naturalisation. Which conditions apply to my case, which documents do you need, what is the fee and the expected processing time?"

🪜 Step by step

  1. Check the conditionsYears, language level, test, income. Direction de l'immigration (Ministère des Affaires étrangères)'s site has a checklist; migrant-support organisations run free info sessions.
  2. Collect proofRegistration history from Commune — bureau de la population / MyGuichet.lu, permits, language certificate, tax and income records, birth certificate with apostille and translation.
  3. Dual nationality?Check both countries' rules before applying; some require renunciation, some do not.
  4. Apply at Direction de l'immigration (Ministère des Affaires étrangères)Fee is due at filing. Ask for the legal decision deadline and note it.
  5. Refused: objectWithin the deadline, with reasons; Assistance judiciaire (Barreau) / consultations juridiques gratuites helps. Many refusals are about missing documents, not eligibility.

📇 All contacts

Direction de l'immigration (Ministère des Affaires étrangères)Residence permits, nationalityFor residence and nationality📞 247-84040🔗 guichet.public.lu/fr/citoyens/immigration.html
Commune — bureau de la population / MyGuichet.luArrival declaration, residence certificatesWithin 8 days of arriving🔗 guichet.public.lu
Assistance judiciaire (Barreau) / consultations juridiques gratuitesLawyer paid for, free consultationsWhen you cannot afford a lawyer🔗 www.barreau.lu/assistance-judiciaire
Ombudsman (Médiateur du Grand-Duché)Complaints about administrations, freeWhen the administration does not answer or acts unfairly📞 26 27 01 01🔗 www.ombudsman.lu

❓ Frequently asked

Do my children get citizenship too?

Usually included in the parent's application if minors and living with you; ask to add them explicitly.

I was abroad for a year in between

Long absences can break the residence count; check the rule for Luxembourg before you apply, and explain the reason if allowed.

How long does it take?

From several months to a couple of years. The legal deadline gives you a lever (notice of default) if it is exceeded.

📎 Sources

Last checked: 2026-09-26

🔎 Common searches

Recognise your own search? The answer above covers all of these.

  • “apply citizenship Luxembourg”
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  • “citizenship test language level”
  • “dual nationality allowed Luxembourg”
  • “naturalisation refused appeal”

🧭 Is this still correct?

We check this information carefully, but phone numbers, websites and rules change — and sometimes we get something wrong. Spotted a mistake or a change? Let us know below.

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