Luxembourgish (/ˈlʌksəmbɜːrɡɪʃ/ LUK-səm-bur-ghish; also Luxemburgish, Luxembourgian, Letzebu(e)rgesch; endonym: Lëtzebuergesch [ˈlətsəbu̯əjəʃ] ) is a West Germanic language that is spoken mainly in Luxembourg. About 400,000 people speak Luxembourgish worldwide.
The language is standardized and officially the national language of the Grand Duchy of Luxembourg. As such, Luxembourgish is different from the German language also used in the Grand Duchy. The German language exists in a national standard variety of Luxembourg, which is slightly different from the standard varieties in Germany, Austria or Switzerland. Another important language of Luxembourg is French, which had a certain influence on both the national language, Luxembourgish, and the Luxembourg national variety of German. Luxembourgish, German and French are the three official languages (Amtssprachen) of Luxembourg.