Nikolaus “Nik” Welter (2 January 1871 – 13 July 1951)[1] was a Luxembourgish writer, playwright, poet, professor, literary critic (Germanic and Romance languages), and statesman.

Other well-known works are Die Söhne des Öslings, Goethes Husar, Der Abtrünnige, Professor Forster and Lene Frank.

As author Welter wrote plays and poetry, as well as commissioned works such as 1909's "history of French literature" on behalf of the University of Marburg .

Around the turn of the century, Welter's interest was in themes from Luxembourgish mythology and history, but also especially literature in the French minority language "langue d'oc" (Provencal), which had been reinvigorated by the Félibrige school.

As one of the German Romanists, he was not indifferent to the efforts that the award of the 1904 Nobel Prize in Literature led to Mistral.