Neuwiller-lès-Saverne (French pronunciation: [nøvilɛʁ lɛ savɛʁn], literally Neuwiller near Saverne; German: Neuweiler; Alsatian: Neiwiller) is a commune located in the historic and cultural region of Alsace and the Northern Vosges Regional Nature Park in northeastern France.

It is classified as a monument historique by the French Ministry of Culture since 1840, making it a part of the first list of such heritage buildings.

Monasteries formed during this time represented important bases of power and wealth for the landowning elites, and were also a source of educated clergy, crucial in the administration of a diminished post-Roman world, and valued as such by Frankish kings.

In 826, Bishop Drogo of Metz, natural son of Charlemagne, transported the remains of Saint Adelphus to be interred at the abbey's church.

In the Middle Ages, these relics became so popular with pilgrims that the Benedictines built a second church nearby to serve as a shrine, so as to remain undisturbed in their own sanctuary.