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The Grand Duchy of Luxembourg is a small State in the heart of Europe; it is home to both Luxembourgers who routinely use the three languages Luxembourgish, French and German, and many foreign residents; there is also a large number of cross-border workers. The complexity and the uniqueness of the situation in terms of language resulted, in 1991, in the creation of the ‘Centre de Langues Luxembourg’ (CLL); legislation passed on 22 May 2009 turned this into the ‘Institut National des Langues’ (INL). The INL is a public administration under the authority of the Minister for Education, Children and Youth.

Our missions

As a centre for language learning, the INL:

  • provides language courses for adults in order to:
    • promote plurilingualism,
    • encourage integration and social cohesion,
    • improve employability;
  • promotes intercultural exchange through use of the languages taught;
  • offers adult literacy courses.

As an examination and certification centre, the INL:

  • certifies knowledge of the Luxembourgish language in respect of official diplomas and certificates in the Luxembourgish language;
  • organises international tests and examinations in foreign languages.

Language teaching

The INL offers classes for adults in eight languages: French – Luxembourgish – English – German – Spanish – Italian – Portuguese – Chinese.

The courses offered comprise:

  • general language courses for beginners and for the more advanced;
  • courses with a specific objective (e.g. business German, business English, German for lawyers, Italian in the Media);
  • training for teachers of Luxembourgish (‘Zertifikat Lëtzebuerger Sprooch a Kultur’ – ZLSK).

In 2014, the INL accepted more than 12,000 registrations from people from 130 different nationalities, and offered more than 55,000 hours of classes.

Language certification

The INL administers international language tests and examinations in conjunction with the Goethe-Institut, Cambridge University, theInstituto Cervantes, the Centre international d’études pédagogiques, theUniversità per Stranieri, Perugia and the Universidade de Lisboa.

  • German– Goethe Zertifikat – Test Deutsch als Fremdsprache;
  • English – Cambridge English Language Assessment – International English Language Testing System;
  • Spanish – Diplomas de Español como lengua extranjera;
  • French – Diplôme élémentaire/approfondi de la langue française – Test de Connaissance du Français;
  • Italian – Diploma della Lingua Italiana;
  • Portuguese – Diploma de Português Língua Estrangeira.

The INL is the national certification centre for official diplomas and certificats in the Luxembourguish language :

  • « Lëtzebuergesch als Friemsprooch »;
  • « Sproochentest Lëtzebuergesch » which must be passed by applicants for Luxembourgish nationality;
  • «  Zertifikat Lëtzebuerger Sprooch a Kultur” – ZLSK.

Our teaching staff

The INL team comprises more than 120 teachers who specialise in teaching foreign languages to adults: teachers – native-speaker teaching assistants – adult trainers – trainees.

Our locations

The INL currently offers courses in:

  • Luxembourg – Glacis: Chinese  – English – French – German – Italian – Luxembourgish – Portuguese – Spanish;
  • Mersch: English – French – German – Luxembourgish;
  • Belval: English – French –  German – Luxembourgish – Spanish.


la Journée mondiale du livre et du droit d’auteur (23 avril)

Nous invitons tout le personnel et tous les apprenants de l’INL à participer à la Journée mondiale du livre et du droit d’auteur. Partagez vos livres préférés de la médiathèque de l’INL et découvrez du 23 au 30 avril les coups de cœur de la communauté de l’INL à la médiathèque. Merci d’avance de votre […]

World Book and Copyright Day (23 April)

  Within the context of World Book and Copyright Day on April 23, share your favourite books from the INL library and discover the recommendations by the INL community at the library on from 23 to 30 April. To participate, please send an e-mail to mediatheque[at]inll.lu and indicate: the title of the book you recommend, […]

Fermeture Vacances de Pâques 2021

Les sites INL Glacis, INL Belval et INL Mersch sont fermés au public du 3/04 – 18/04 inclus. Nous vous souhaitons de joyeuses Pâques!

Heures d’ouverture – Vacances de Pâques 2021

Les sites INL Glacis, INL Belval et INL Mersch sont fermés au public du 3/04 – 18/04 inclus.

22/03-26/03/2021 Horaires d’ouverture exceptionnels: Guichet d’accueil INL-Belval

Lundi, le 22/03/2021 08h00-12h30 13h30-17h00 Mardi, le 23/03/2021 11h00-12h30 13h30-17h00 Mercredi, le 24/03/2021 08h00-9h30 13h30-17h00 Jeudi le, 25/03/2021 08h00-12h30 13h30-17h00 Vendredi, le 26/03/2021 08h00-12h30 13h30-16h00

12/03-19/03/2021 Horaires d’ouverture exceptionnels: Guichet d’accueil INL-Belval

12/03/2021 08h00-10h45 13h30-16h00 15/03/2021 08h00-12h00 12h30-16h30 16/03/2021 08h00-12h30 13h30-15h30 17/03 – 18/03/2021 08h00-12h30 13h30-17h00 19/03/2021 08h00-12h30 13h30-16h00